Tag Archives: jewels

The Princess of Wales jewellery trooping the colour

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What a year it has been for the Royal family and ceremonial events and on the 17th June, they did it again, for the King’s birthday, also known as Trooping the Colour. The Princess of Wales was as regal as ever, and her outfit full of meaning – as they usually are.

When I first glanced at her stylish green outfit, my first thought was how reminiscent of the late Queen it was.

But when looking closer at the jewellery, the true meaning of the green came to light. Earlier in the year The Princess of Wales took over the role from her husband as the 11th Colonel of the Irish Guards. Her outfit designed by the fashion designer Andrew GN is called “emerald green triple crème coat dress with satin trim” and retails for £2,839 and is a deliberate choice of colour on this very special occasion.

It is completed by handcrafted jewelled buttons which appear to be a mix of turquoise, chalcedony or chrysoprase, and echoes the British flag design.

The jewelled button was also carefully placed on the back of the wide trimmed hat, by Philip Treacy.

The coat dress was paired with her signature shamrock brooch which she has been seen wearing on St Patrick’s day.

The brooch of textured design, features a single emerald to the centre. It was crafted by Cartier and then presented to Princess Mary, the Princess Royal, by the regiment in 1961. Though others state that the piece may have belonged to Queen Alexandra first. When Princess Mary died, the brooch was sold at auction and bought by the regiment and it was worn by the Queen Mother until her death in 2002, followed by Princess Anne between 2002 and 2011, and is on these occasions, loaned by the regiment.

In 2014, a similar four-leaf clover brooch came up for auction, the brooch made in 1957 by Cartier sold for £2,000 (including buyer’s premium). Today, I would place an insurance replacement value of £10,000 on this brooch.

To complete the look, the Princess of Wales wore Princess Diana’s sapphire and diamond cluster earrings.

The earrings feature two cabochon sapphires within a diamond surround, each cluster connected by a single diamond. The earrings are said to be part of a suite gifted to Princess Diana for her wedding by the Crown Prince of Saudi Arabia. The suite comprises of Burmese sapphire and diamond pendant with matching earrings, a ring, bracelet, and a watch.

The author of The Queen’s Jewels, Leslie Field described the Saudi set as, “Made by Asprey, it consists of an enormous Burmese sapphire pendant set in a jagged sunray fringe of baguette diamonds and hung on a thin diamond necklace; a matching pair of earrings and ring; a two-row bracelet of brilliant-cut diamonds with a smaller version of the sapphire pendant as a centrepiece; and a wristwatch, the face set in the same diamond sunray fringe and the strap consisting of seven oval sapphires set in clusters of diamonds.”

In 2007, Sotheby’s sold a similar sapphire and diamond cluster ring, comprised of a 3.52cts Burmese sapphire within a diamond surround, totalling 5.50cts. It sold for USD 12,000 (including buyer’s premium). Today, I would place an insurance replacement value of at least £50,000 for this piece.

For every event, The Princess of Wales carefully curates and matches her outfits including jewellery with the attention to detail simply impeccable.

Look at for her next time and spot the details within her dress and jewellery.

As jewellery replacement values continue to increase, please can we remind you to update your insurance valuations and if you have never had a valuation please call us to discuss.

The Crown Jewels for the Coronation

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On May 6th King Charles III will be crowned in Westminster Abbey. A tradition dating back nearly 1000 years since William the Conqueror who was crowned in 1066. Charles’s will be the 38th coronation in the Abbey, most, like Charles’s, having been conducted by the incumbent Archbishop of Canterbury.

We are expecting a simpler and more paired back coronation for King Charles, but this does not mean that it is going to be light on tradition and ceremony. This historic event will still be an occasion for spectacle and celebration.

It is a ceremony that has remained essentially the same for a thousand years and the Coronation Regalia are at the heart of proceedings, imbued as they are with cultural and spiritual significance. They represent the powers and responsibilities of the new King and the solemnity of the occasion.

The last time we saw some of the regalia of the coronation was on the late Queen’s coffin, which was adorned with the crown, orb and sceptre.

These three items will play an integral role at the heart of the coronation service, but they are not the only pieces that we will see on the day.

St Edward’s Crown is the crown historically used at the moment of coronation and worn by Her Majesty Queen Elizabeth at her coronation in 1953.

It was made for Charles II in 1661, as a replacement for the medieval crown which had been melted down in 1649 by Parliamentarians. Charles will wear this crown. The crown is 22 carat gold, so almost pure gold. It stands 30 cm tall and weighs an impressive 5lb. It contains tourmalines, white and yellow topaz, rubies, amethysts, sapphires, garnets, peridot, zircons, spinel and aquamarines. The three superstar gems in the crown are the Black Prince’s ruby, the Stuart sapphire and the Cullinan II diamond. No wonder Queen Elizabeth used to practise wearing it before the coronation, so its weight was not overwhelming on the day.

Camilla, the Queen Consort, will wear the Queen Mary’s Crown. This was removed from display at the Tower of London for modification work ahead of the coronation. It is the first time in recent history that an existing crown will be used for the coronation of a Consort. For previous coronations a new crown was commissioned. However, as a concession to the prevailing economic climate; sustainability and efficacy this crown, originally made by Garrards for the 1911 coronation, is being repurposed. Some minor changes and additions will be undertaken by the Crown Jeweller. These changes will pay particular tribute to the late Queen Elizabeth, as the Crown will be reset with the Cullinan III, IV and V diamonds. These diamonds were part of Queen Elizabeth II’s personal jewellery collection for many years and were often worn mounted in brooches.

At the heart of the ceremony itself are the sceptre, orb and the coronation anointing spoon. The Sovereign’s Sceptre and Cross symbolises the crown’s power and governance. It has been used at the coronation of every monarch since 1661. It was first used by King Henry VIII in 1509 for his own coronation. It is a golden rod, enamelled and set with multiple gemstones, the best known of which is the Cullinan I, or Star of Africa, a heart-shaped diamond weighing a colossal 530.2 carats.

In the photograph of Queen Elizabeth’s coronation you will see a second sceptre. This is the Sovereign’s sceptre with Dove. It is also known as the rod of Equity and Mercy and depicts an enamel dove wings outstretched alighting on the golden orb and cross. It represents the monarch’s spiritual role as head of the Church of England.

The most ancient piece of the coronation regalia is the coronation anointing spoon. The monarch is anointed with holy oil. The Chrism oil which will be used on May 6th has already been consecrated in Jerusalem. The oil itself comes from olives grown on the Mount of Olives and has been infused with sesame, rose, jasmine and other essential oils.

The spoon is silver gilt. Its existence was first recorded in 1349, but it may be even older. It is ornate with a central division and has been used to anoint monarchs for nearly seven hundred years. The central division may have been so that the archbishop might dip two fingers into the holy oil as he anoints the head, breast and hand of the new monarch.

It is traditional that the choir sings ‘Zadok the Priest’ during this sacred part of the ceremony; music originally composed by Handel for the coronation of King George II in 1727 and which has become an integral part of the proceedings.

The anointing is followed by dressing of the monarch in the spectacular robe of cloth of gold called the Supertunica and the long Imperial Mantle. The monarch is then presented with other items from the Coronation Regalia.

These include the gold spurs, the jewelled Sword of Offering and the Armills. The Armills are gold bracelets representing sincerity and wisdom. It is at this point that the monarch also receives the Sovereign’s Orb, as well as a ring and two sceptres.

The Orb is placed in the right hand of the monarch, during the investiture as the symbol of sovereignty. As a cross mounted on a globe, it represents the Christian world and the power of God. It is a reminder to the monarch that their authority is given by God. It is bisected with applied bands incorporating clusters of emeralds, rubies, sapphires and rose diamonds between bands of pearls. Having been handed to the King, it will be removed and placed on the altar before the moment of crowning.

The King will also be presented with the pair of golden spurs. These were first included amongst the regalia of the coronation in 1189 at the coronation of Richard the Lionheart. These represent his ‘knightly values and virtues’, such as protecting the poor, and defending the church. The current spurs are gold, made in 1661 for Charles1 and adapted in 1820 for George IV. In the past, the spurs were attached to the sovereign’s feet, but on May 6th they will be held at the ankle of the king.

The Sovereign’s ring will be placed on his fourth finger. The ring has the cross of St George at the centre formed from five rubies, overlaying an octagonal cut sapphire and bordered with fourteen old cushion cut diamonds. The ring was originally made by Royal Goldsmiths and Silversmiths Rundell, Bridge and Rundell for the coronation of William IV. It is said to be a symbol of ‘kingly dignity’.

The coronation sword, also known as The Jewelled Sword of Offering, will be presented by the archbishop, who first blesses the sword and then presents it with the direction that it should be used for the protection of the good and the punishment of evil. First used in 1821 by George IV, it has been used at all coronations since 1902. Like the Sovereign’s ring, the sword, made from blued steel, with a gold, jewel encrusted hilt and jewelled leather scabbard, was a commission from Rundell Bridge and Rundell.

The ceremony culminates with the placing of the St Edward’s Crown on the monarch’s head, the actual ‘coronation’.

The new King will change his crown for The Imperial State Crown as he leaves the Abbey. This is the crown that he will wear for future state occasions like the annual opening of Parliament. Although set in gold with 2,868 diamonds, 269 pearls, 17 sapphires, 11 emeralds and four rubies, it weighs a mere 2.3lb and is a more practical choice. It was worn by the Queen when she left Westminster Abbey in 1953. It was originally made for the coronation of her father, King George VI, in 1937.

Many of us grew up listening to older relatives tell tales of the Queen’s coronation. Televisions were purchased for the first time for the occasion, families huddled round radios to hear the ceremony live, and there is the enduring account of Queen Salote Tupou III who refused to be cowed by the rain and rode through London in an open topped carriage. No doubt King Charles’s coronation will be a different meld of old, new and unexpected acts of generosity and kindness. We can but wish for a day of joy and hope, amidst the tradition and ceremony.

A few of my favorite glitz from the SAG Awards 2023

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This year’s big winner of the evening was the family adventure Everything Everywhere All at Once whose leading actress Michelle Yeoh won the award for Female Actor in a Leading Role.

Just as she did for the Bafta, she dazzles us once again with spectacular pieces by Moussaieff including a yellow diamond and diamond ring, set with a 21.02 carat Fancy Vivid Yellow diamond between pear-shaped diamond shoulders.

To put this into perspective, a 3.03 carats Fancy Vivid Yellow diamond ring mounted in platinum is currently up for sale at Sotheby’s online for USD 195,000. I leave it to your imagination to work out the cost of the above 21 carats diamond!

She paired the ring with a pair of chandelier yellow diamond and diamond earrings.

The earrings are set with 24.70 carats of pear shaped Fancy Intense Yellow diamonds, and 11.08 carats of pear-shaped and brilliant-cut white diamonds.

The outfit was finished with a Richard Mille wristwatch for which she is also a brand ambassador.

Fellow actor Ke Huy Quan, who won the Outstanding Performance by Male Actor in a Supporting role category and made history by being the first Asian actor to win this SAG award, looked dashing with a De Beers brooch from The Alchemist of Light high jewellery collection, set with a 2.70 carat oval Fancy Grey diamond within a blue aluminium surround.

The beautiful collection by De Beers include the Ascending Shadows Small Earrings.

Set with two central diamonds each weighing 1.01 carats and 1.02 carats, E, VS2, within a surround of diamond, the total weight adding to 6.30 carats and mounted in 18 carat white gold, 18 carat rose gold, titanium & aluminium. These currently retail for £94,500. Similar designs of the collection include a headband, necklace and cocktail ring.

Other red carpet nominees and actors wearing De Beers exceptional pieces included Angela Bassett, Li Jun Li, Hannah Einbinder, and Katherine Waterston. Cara Delevingne dazzled in a “few” De Beers pieces.

These included: The Alchemist of Light ‘Midnight Aura’ Necklace set in 18 carat white gold with 74.73 carats of diamonds, The Alchemist of Light ‘Midnight Aura’ Earrings set in 18 carat black rhodium plated white gold with 9.58 carats of diamonds, a diamond line bracelet set in platinum with 17.03 carats of diamonds, Volute Ring set in platinum with 6.80 carats of diamonds, Adonis Rose Pear
Diamond Ring set in platinum with 5.40 carats of diamonds, a diamond eternity band set in platinum with 6.14 carats of diamonds, and a round brilliant diamond eternity band set in platinum with 7.15 carats of diamonds.

The Volute diamond ring can be yours for USD 218,000.

One of my favourite red carpet actresses is Zendaya. She is faultless! And this year’s 29th ceremony of the SAG awards was no exception. Nominated for Best Female Actor in a Drama Series for her starring role as Rue in HBO’s Euphoria, she paired her pastel pink Valentino Haute Couture gown with a Bvlgari bib necklace set with aquamarine, tanzanite and morganite.

Later that night, to present an award, she changed outfits and wore a Bvlgari chocker centrally-set with an oval -shaped aquamarine.

I always say that a red carpet is not quite complete without a Bvlgari Serpenti necklace. Emily Blunt’s Oscar de la Renta gown was styled with a pink gold choker with diamonds and rubies from Bvlgari’s
new collection celebrating Serpenti’s 75th anniversary, along with pavé diamond earrings and a platinum ring.

A similar Bvlgari Serpenti diamond and ruby necklace sold at Sotheby’s in July 2022 for HKD 1,625,000 (approximately £171,375).

 

One can have its own Bvlgari Serpenti collection with this Serpenti Seduttori ring for £9,000 or Serpenti necklace for £20,900.

And who knows, perhaps draped in Bvlgari, the SAG awards might have the pleasure of having you walk down its red carpet next year…

Helen’s guide for that special Valentine’s day gift

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Valentine’s is a day that is dedicated to love. It originated as a Christian feast day honouring Saint Valentine, a martyr who lived in the 3rd century AD. It is now a day for people to express their love and appreciation for their significant others, friends, and family.

Some people choose to exchange gifts of jewellery and what better gift than one that you can see your loved one wear and can make a great investment for the future. The gift that keeps on giving!

Here is Helen’s guide and suggestions on the perfect gift for Valentine’s Day.

Firstly, let’s look at the things to consider when choosing jewellery:

A good thing to consider is the rarity of a piece. Antique or vintage jewellery can increase in value due to its rarity. Jewellery set with fine quality gemstones can also command very high prices at retail and auction.

Rubies and pink sapphires make an excellent choice for valentine’s day.

The Italian Jeweller Pomellato have some beautifully designed gem-set jewellery that sells very well at auction. This beautiful bracelet was estimated £4000 – £6000 at Bonhams in 2022.

Below is an example of a 4.02ct ruby that sold at Sotheby’s in 2021 for $63,000. The excellent quality stone was accompanied by a report from GRS (Gem Research Swiss lab) stating that the ruby was of Mozambican origin with no indications of heating.

As well as rarity, the quality and craftsmanship of a piece of jewellery can make a huge difference to its value. High-quality jewellery made with fine materials and gemstones can also increase in value over time.

Another important factor is market demand. Diamond jewellery is always in high demand and popular both at retail and auction. Diamond single stone rings remain the most popular choice for an engagement ring. Other examples of popular diamond jewellery include earrings, pendants, and bracelets.

Here is an example of a stunning diamond line bracelet by De Beers retailing for £92,500. De Beers are famous for their exquisite selection of diamond jewellery.

Jewellery made by some well-known brands and designers, such as Cartier, Van Cleef & Arpels and Tiffany & Co. can make great investments and they also have many romantically themed designs perfect for Valentine’s Day.

Pieces from these brands often increase in value over time due to their popularity.

Here is an example of a Cartier Love bangle that went through auction in 2005 and sold for £600 including premium. This bangle in today’s market would sell for more than £4000. That’s a huge increase in value.

Bonhams 2005 Cartier love bangle sells for £600.

Bonhams 2022 Cartier love bangle sells for £4080.

Diamonds also make a great investment and remain a classic choice for Valentine’s Day.

This is a colour D, IF clarity diamond is valued at over £100,000.

Diamonds have been traded since the 4th century, they have stood the test of time and this longevity is a testament to their strength, rarity and beauty.

In many ways their value is protected by rising mining, manufacturing, shipping, and insurance costs involved in bringing a diamond to market and this helps to maintain their value.

As Marilyn Monroe sang… “Diamonds are a girl’s best friend.”

The best way to select a diamond is to familiarise yourself with their grading system. During the middle of the 20th century The Gemmological Institute of America (GIA) created a grading system for diamonds. It is now recognised globally as the universal method for assessing the quality of a stone.

It can be extremely helpful as it tells you the quality of what you are purchasing and its these specific details that establish a diamonds value.

The system focuses on the Four C’s, which stand for Colour, Clarity, Cut and Carat.

Colour

When it comes to colour in diamonds, it’s more about what you can’t see. When grading colour, we are assessing the absence of colour, a measurement of the degree of colourlessness in a stone.

It’s measured from D (perfectly white) to M (Yellow) see the below scale.

The most valuable on the scale are pure white, D colour.

Clarity

The GIA Diamond Clarity Scale has six categories

  • Flawless (FL) No inclusions and no blemishes visible under 10x magnification
  • Internally Flawless (IF) No inclusions visible under 10x magnification
  • Very, Very Slightly Included (VVS1 and VVS2) Inclusions so slight they are difficult for a skilled grader to see under 10x magnification
  • Very Slightly Included (VS1 and VS2) Inclusions are observed with effort under 10x magnification, but can be characterized as minor
  • Slightly Included (SI1 and SI2) Inclusions are noticeable under 10x magnification
  • Included (I1, I2, and I3) Inclusions are obvious under 10x magnification which may affect transparency and brilliance

Here is a visual example of the clarity scale

The most valuable having a clarity grade of flawless, most commercial diamonds have a clarity of VS / SI.

Here is an example of a colour D, clarity IF diamond selling for £500,000.

Carat

A diamonds weight is represented by carat weight. All else being equal, diamond price increases with diamond carat weight because larger diamonds are rarer and more desirable. The increase in price between a 0.99ct diamond and a 1.00ct diamond is huge even though there is a very minute size difference, this is because commercially a 1.00ct diamond is more desirable.

Cut

A diamond with optimum proportions and cut will display the best amounts of fire and brightness, that lovely effect that makes diamonds so unique and beautiful. You will often see the grade of a cut ranging from excellent to poor recorded on certificates.

Cartier, Van Cleef & Arpels and Tiffany & Co. select the best quality diamonds for their jewellery.

Designer Jewellery

Cartier

Cartier is a very well-known luxury jewellery brand with a long history of creating luxurious and elegant jewellery, here are some of their most popular designs.

The Love Collection

The Cartier Love Collection is a classic design that has become synonymous with the brand. It’s simple, yet elegant with designs available in gold and platinum and some set with diamonds and gemstones.

Both diamond love bracelets retail for £40,700, the rose gold version would work particularly well for Valentine’s Day.

This plain rose gold version retails for £6350.

The Trinity Collection

The Cartier Trinity Collection is also a very popular choice. Made up of three bands of yellow, white, and rose gold, the pieces are said to be a symbol of love, friendship, and loyalty. A great message to send on Valentine’s Day.

They are available in a variety of styles with some set with diamonds.

Here is one of the more commonly seen versions with diamonds set to one of the bands.

This diamond set example retails for £6,150.

This diamond set version retails for £32,400 and would make a lovely gift with its use of rose, yellow and white gold.

There are also pendants, earrings, and bracelets available in the same design.

A very rare version is a bangle set with white, pink, and yellow diamonds, which retails for £250,000!

Cartier are not only known for their jewellery but also have a great selection of watches. The Tank Française watch is a classic design that was first introduced in 1917. It has since become one of the brand’s most iconic watches. These watches are very popular and sell well, they are perfect for someone looking for an alternative to jewellery on Valentine’s Day. Cartier also have a great selection of gentleman’s watches.

This gold and diamond Tank Française retails at Cartier for £26,300.

This stainless-steel version retails for £4200.

Van Cleef & Arpels

Another famous jewellery brand is Van Cleef & Arpels (VCA). Two models which are hugely popular and collectable are the ‘Alhambra’ and ‘Ballerina’.

The iconic Alhambra design has clovershaped motifs often set with various gemstones. They come in various designs such as long chains, bracelets, rings, and earrings.

The red gem Carnelian is set in this Alhambra VCA pendant and retails for £1490.

The malachite version of the Alhambra design is now very rare and no longer produced by VCA, therefore the secondary market has overtaken the retail price when the piece was still available.

This one sold for £28,000 at Christies in 2018. Another iconic design by VCA is the Ballerina collection which features delicate, dancing ballerina-inspired designs. They were inspired by a collaboration with Benjamin Millepied, the new dance director at the Paris Opéra, and his wife, the actress Natalie Portman.

These designs are no longer produced by VCA and make great money when they come up at auction.

The above turquoise, ruby and diamond Ballerina brooch by Van Cleef & Arperls sold for $218,000 in 2017 at Christies New York.

This diamond, ruby, sapphire, and emerald version sold for £6000 at auction in 2010. They would make a great gift if a loved one who has a passion for dancing, or perhaps you met on a wedding dance floor!

Tiffany & Co.

We couldn’t talk about great jewellery designers without mentioning Tiffany & Co. They have released many iconic designs over the years and here are some examples of their most popular.

The “Return to Tiffany” Collection features classic and timeless designs, such as heart lockets and charm bracelets engraved with ‘Return to Tiffany & Co. New York’ its most famous store.

Tiffany & Co. are particularly well-known for their diamond engagement rings; in fact, the “Tiffany Setting” ring is iconic. Rings can sell for hundreds of thousands of pounds depending on the quality and size of the diamond. Perhaps the epitome of romantic jewellery, a Tiffany engagement ring!

Another great example of Tiffany & Co jewellery is designed by Jean Schlumberger. He was one of the 20th century’s most gifted artists and his designs have been described as deeply imaginative, as well as being extremely desirable.

This beautiful enamel bracelet retails for just under £50,000.

Schlumberger’s designs at Tiffany & Co. were known for their whimsical interpretations of natural forms. He was especially inspired by sea creatures and other animals. Now he is most known for his enamel bangles and his diamond kisses rings. These are extremely popular at retail and at auction.

The kisses ring retails for £11,200.

Schlumberger began working for Tiffany & Co in 1956 and his original designs can sell for very high prices at auction.

This bird on a rock brooch set with a large Citrine weighing 61.20ct sold for £37,000 at auction.

Antique Jewellery

Art Deco

Antique jewellery can also make a great investment and is often romantically themed.

Art Deco jewellery is characterised by its geometric shapes and bold use of colour, making it a popular and romantic choice for special occasions.

Engagement rings from the Art Deco period are very popular, the target design was given as a token of love because it represented the bullseye shot by cupid’s arrow.

This diamond and ruby Art Deco target ring retails for £46,000.

Art Deco jewellery also sells very well at auction.

Victorian Jewellery

Queen Victorian reigned from 1839 to 1901 and the styles of the Victorian period are very intimately connected with the different stages in her life.

In 1840 Queen Victoria married the love of her life Prince Albert and this had a huge influence on jewellery styles. The theme for jewellery was love with motifs of hands, hearts, crosses, and knots to represent an eternal bond between two people. Snakes also featured, symbolising promise and being in love forever.

This diamond heart retails for £1500 and is set with 0.50ct of rose-cut diamonds a cut often used in the Victorian period.

This Victorian Lovers knot ring is another example of the romantic jewellery from the Victorian period. This retails for £1300.

This example of a ‘forget me not’ ring is set with an onyx that has been beautifully decorated with bright cushion-cut diamonds in the shape of a pansy. The pansy represents the message ‘pensée à moi’ which translates to ‘think of me’.

The theme of romance remained abundant throughout Victoria’s reign with lockets becoming increasingly popular. Wearers enjoyed holding pictures of loved ones inside.

Valentine’s Day is a special time to show your love and a piece of jewellery can be the perfect way to do so.

So, why not make this Valentine’s Day extra special with a beautiful and meaningful gift that’s lasts a lifetime and says I love you.

But remember to add to your insurance policy and get an up-to-date valuation next Valentine’s Day as the retail replacement value may have increased!

Hocus pocus… Focus on… Amber

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To kick off this mini series of Halloween gems, amber is the chosen first. What could be more spooky than trapped insect containing deadly bacteria…

Prized for its deep rich and warm orange hue, amber is an organic gem, meaning that it is created from living or once living organism, it is fossilized tree resin dating tens of millions of years. It is composed of carbon, oxygen and hydrogen. Nicknamed “the gold of the North”, it is most commonly found on Northern Europe’s beaches, washed away with the ocean tides. It can also be dug from the ground and deposits have also been found in the Dominican Republic, Myanmar (Burma) and Mexico.

There is a distinction to be made between amber and copal amber. The latter refers to amber which fossilized less than a million years ago. But who’s counting!! It is also fossilized tree resin and is formed in the same manner. One cannot differentiate between the two using a magnifying glass, but rather by using “granny’s old tricks”. Some say that rubbing copal amber on the heel of your hand will emit a smell, others suggest a drop of acetone or even gasoline to determine copal from mature amber: amber is unaffected by acetone whereas copal softens the material. Either way, probably best to avoid doing at home and damaging one’s precious jewel!

Like with all gems, it takes very specific conditions to create amber. It takes a few million years for resin to harden. Once it has hardened it lays under sediment in an oxygen-free environment. It turns to copal amber. It then takes a few more million years to become more stable with the effects of heat and pressure applied to the copal amber to become amber. Research shows that the deposits found in the Baltic and Dominican Republic came from extended immersion under seawater.

Because of its relative softness – rating at 2/2.5 on the Mohs scale (talc powder rates at 1) – it is not commonly cut with facets, but rather polished into beads or free-form pieces.

Jewellery made of amber tend to be big pieces. The reason for it being the lightness of this gem, making it a perfect candidate to wear around one’s neck without feeling weighed down.

The most prized amber pieces are typically transparent, dark reddish hue. However, amber also comes in white and treatments to enhance colour can modify its appearance totally. Heat treatment and dying are commonly used to enhance amber and one distinct mark to look for are sun spangles. Heating amber can cause fracture-like marks: sun spangles.

Amber is a treasured gem because of the secrets they can unveil. The insects, fauna and animals they have sometimes captured tell a tale.

Inclusions play a huge part in the final value of amber but often if the inclusion is perfect, then it probably is too perfect to be real.

It can be extremely difficult to trust authentic amber with inclusions, such as this piece for sale on eBay for $129,000:

And this perfectly preserved scorpion, also on for sale at eBay for £4.90! :

When in doubt and spending a large amount, always ask for a report from a reputable laboratory.

Man-made or real, amber with insect inclusions make the perfect jewellery piece for trick or treating!

Ametrine

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Ametrine is a form of quartz. It combines both the purple amethyst and the yellow citrine all into one stone, making it somewhat of a unique specimen. To add to this uniqueness, commercial ametrine is only found in Bolivia, and more precisely in the mine of Anahi.

What do we mean by commercial? Stones that are of a particular quality that can be cut and set into jewellery.

The mine was named after a legendary princess of the 1600s who married a Spanish conquistador and was given the mine as dowry. The mine located in a very remote area of Bolivia, was lost for centuries. Research shows that the mine was only rediscovered in the mid-50s, only accessible by plane and small boats.

Ametrine displays the same properties as amethystand citrine. Ametrine rates a 7/10 on the Mohs scale. The Mohs scale of mineral hardness was created by Friedrich Mohs in 1822 and determines the scratch resistance of minerals when scratches by another mineral.

The Mohs scale is used to manufacture everyday objects: your mobile phone’s screen glass is made of a material that scratches at level 6, some at level 7. Ametrine therefore has good toughness and is suitable to be set in jewellery, such as this sapphire and ametrine torsade necklace which sold at auction for $408 (pictured below).

It can be noticed that ametrine is most commonly found in jewellery as a rectangular-cut stone. This cut displays the bi-colour property of the gem, exposing both colours at its best, with the clear demarcation between the yellow and the purple. The most prized ametrine will display fine transparency, a good contrast of colours and an equal balance between the two colours. Though it rates rather high on the Mohs scale, its colour can fade if exposed for long periods of time to too much bright light. If ametrine is worn in jewellery, its wearer should be aware of its possibility to scratch and chip if not cared for properly.

How would one care for its ametrine-set jewels? The best and safest way to clean your jewellery is with good old fashion soap and warm water and not exposing it to high heat. It is preferable not to place the gem in an ultrasonic in case the stone or others in the piece of jewellery have been dyed or fracture filled (the machine’s vibrations will remove the modifications).

Because of its extraordinary features, ametrine is often carved into fantasy-cuts.

An ametrine carving of rooster by Gerd Dreher sold at auction for $12,575. Dreher is a German animal figure carver, the fourth generation of Dr eher in this line of activity. He was born in 1943 in Idar- Oberstein, one of the most important gemstone centres in the world with the finest lapidaries and gem cutters.

This gem-set obelisk / jewellery box by Manfred Wild (pictured top right) remained unsold at $200,000- 250,000. Wild aas born in 1944 in Kirshvayler near Idar-Oberstein. He is the eighth representative of the family dynasty that has been engaged in lapidary art since 1630. Manfred Wild is sometimes called “The 21st century Fabergé”.

Ametrine is used in a wide range of carvings for its intriguing features. It is not uncommon to see jewels set with ametrine but it seems to be slightly underappreciated for what it is: an exceptional wonder of nature who combines two stones into one giving it a delightful play with colours.

I is for iolite

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Iolite is the gemstone variety of cordierite, a magnesium, iron, aluminium and cyclosilicate mineral named after the French geologist Pierre Cordier (1777 – 1861) – founder of the French Geological Society.

As with some other blue gemstones, iolite is known for its pleochroic properties giving it that extra sparkle. Pleochroism is an optical phenomenon in which a substance has different colours when observed at different angles, especially with polarized light.

Iolite occurs in several areas of Africa, including Kenya and central Tanzania. In fact, when Tanzanite was first discovered, geologists thought it was corderite.

Other iolite source countries include India, Brazil, Norway and a large deposit found in 1994 in Madagascar.

The name iolite comes from the Greek word ios, meaning “violet”. It is said that iolite slices were used by Viking navigators to locate the sun on cloudy days, used as some form of compass.

The gem rates at 7 to 7.5/10 on the Mohs hardness scale. The Mohs scale of mineral hardness was created by Friedrich Mohs in 1822 and determines the scratch resistance of minerals when scratches by another mineral.

The Mohs scale is used to manufacture everyday objects: your mobile phone’s screen glass is made of a material that scratches at level 6, some at level 7.

Even though iolite scores rather high on the Mohs scale, it has strong cleavage in one direction, giving it only a fair toughness. Cleavage, caused by weak atomic bonds, is the weakest plane in a gemstone where the gemstone can split.

For this reason, jewellers are a little reluctant to use the gem in jewellery, specially any hard-wearing jewel such as rings for example.

The gem’s most sought after colours are violetish blue to fine blue. But iolite can appear to be greyish, even transparent, or golden and even brown. Depending on where the light hits, differentcolours will show. For this reason, iolite can be confused with colour change sapphires.

Vivid violetish iolites over 5 carats are rare and cannot be treated in the same way as corundum (sapphires) can be. Unlike sapphires, iolite’s chemical composition won’t allow it to be heat treated to intensify its colour. The gem would simply melt at such high temperatures.

Iolite is more often than not faceted, bringing out its unique transparency, free of inclusions.

But it also is a popular choice for cabochons.

In some iolites, a phenomenon called cat’s eye can sometimes be observed. This effect comes out at its best when the gem is cut as a cabochon.

The cat’s eye effect is caused by long, parallel, tubular inclusions. It can also be found in other gems such as sapphire and chrysoberyl.

Though iolite is hardly ever treated, making it a very appealing affordable blue-gem alternative, due to its relative hardness and lack of consistent fine quality supply, it is not found in as many workshops as tanzanites for example. However, iolite is also cut as beads and strung to make beautiful colourful
necklaces.

A wonderful twenty-first wedding anniversary gift…

The one that got away…

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Some time ago, I worked at Bonhams, in the jewellery department. Along with the regular monthly sales held in Knightsbridge were pawnbrokers’ auctions. These were comprised of any jewellery items which had not been redeemed by a customer and needed to be sold on the open market to obtain a fair price and hopefully achieve the best price for it.

The excitement and unpredictability of an auction never fades and each sale kept us on our toes. With pawnbroker sales, that unpredictability was tenfold. Because a pawnbroker client had until the very last moment to redeem his/her item, this meant that items could be withdrawn from an auction at any point prior to the item’s lot number being called out by the auctioneer.

In this case, the one that got away was a magnificent Burmese sapphire ring up for sale in the pawnbroker’s auction. Because pawnbroker auctions are so volatile, there are no catalogues and therefore no image, so I will do my best to convey this ring’s uniqueness.

The sapphire was Burmese. That in itself, is usually indication enough to express the velvety blue hue that sapphires from this part of the world have. Burmese, or Kashmir, sapphires are the most coveted sapphires, considered to have the deepest, intense and rich blue hue. Also known as “Royal Blue”.

Sapphires belong to the same family as rubies, they are corundum. Any coloured corundum, other than red, is called a sapphire. Sapphires differ from rubies in that they have iron as part of their crystal lattice.

Both sapphires and rubies from Burma make for the most exquisite gems. The value in a Burmese sapphire lies in the depth of colour and its dispersion. This is due to minute crystalline inclusions in the stone. Inclusions are small “imperfections” captured in a stone during its formation.

They are like fingerprints, unique to every gem. Below are a few examples of inclusions which are found in sapphires. These help identify where a gem formed, where it was mined and if the gem is natural (as opposed to synthetic, or man-made) and if it has had any treatment to enhance the colour or make inclusions less visible.

Mogok Sapphires

The sapphire in the ring that was up for auction had beautiful silk crystal inclusions and certainly had that “Royal Blue” hue about it. The most famous “Royal Blue” sapphire is probably the one set in Kate Middleton’s sapphire and diamond engagement ring, which belonged to her mother-in-law, the late Princess Diana.

The sapphire weighs 12 carats and is set within a surround of brilliant-cut diamonds. When it was made in 1981, the sapphire ring cost £50,000. Because of the provenance and history of the ring, it has become a priceless piece of jewellery, but one could estimate its current price to be around £500,000.

The world’s most expensive sapphire to sell at auction was sold at Sotheby’s Hong Kong on the 7th October 2015. It weighed 27.68 carats of natural Kashmir origin and made $6,702,564, $242,415 per carat.

It is common for these exceptional sapphires to be accompanied by multiple certificates. If one is to buy a gem, whether for pleasure or investment purposes, it is recommended to buy one with a certificate from a reputable laboratory such as SSEF, GIA, Gubelin.

Don’t be fooled by reports sold with sapphires in markets which simply state that the sapphire is a corundum and details its shape and weight. The stone could well have been man-made in a laboratory in which case a report should state “natural” or “synthetic”.

A gem can also be treated to make it more desirable. It is common practise for sapphires to be heat-treated to bring out more colour in the stone. This should also be mentioned in the report, along with any other enhancements.

Whatever the price of the gem, look for clarity from the seller/dealer/jeweller. If there is transparency and one knows what they are paying for then an honest transaction can proceed. If in doubt, walk away.

I was convinced this sapphire ring was a good investment opportunity. And I would have been right! Sapphires, like rubies and emeralds for example, have seen a net increase in value in the recent years. A similar ring to this superb sapphire ring selling for £25,000, would probably exceed £100,000 at auction in the present climate.

Unfortunately, the sapphire ring was to be pulled from auction moments before the sale was to start and this will forever be The One That Got Away…

G for Garnet

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Garnet is one of the oldest known stones to man. It is the first gem mentioned in the Bible, in Hebrew “nophek”. Indeed the Talmud mentions garnet as being Noah’s only source of light in the Ark in the form of a carbuncle. A carbuncle often refers to ancient red garnet and red stones in general. It was one of four stones to be given by God to King Solomon.

Garnets have also been found to adorm Egyptian mummies, set in necklaces and other jewels. The oldest red garnet bead necklace to have been found is believed to be from 5,000 BC.

In ancient Rome, signet rings with carved garnets were used to stamp the wax that secured important documents.

Because the gem comes in such a wide range of colours, they each have a specific name.

The green garnets are also called tsavorite – named after the Tsavo Game Reserve in Kenya where it was first found by British geologist Campbell R. Bridges in 1967 and named by Harry Platt of Tiffany & Company.

My favourite is perhaps the demantoid garnet for the inclusion it sometimes hold: a horsetail. An inclusion is any material trapped within a stone during formation. In the case of a horsetail, a formation of golden feathery inclusions of chrysolite form in curves resembling the tail of a horse.

Rhodolite is a purplish red variety. Red garnets are also called almandine, pyrope, whereas the more orangey type are called spessartite, almandite and hessonite.

Red garnets were made even more popular in the mid-16th century when a large deposit was discovered in Central Europe. It became one of the most widely traded gems by the late 1800s.

Its current retail cost could reach £38,000 at a specialised antiques jeweller.

Garnet rates a 6.5-7.5/10 on the Mohs scale. The Mohs scale of mineral hardness was created by Friedrich Mohs in 1822 and determines the scratch resistance of minerals when scratched by another mineral.

The Mohs scale is used to manufacture everyday objects: your mobile phone’s screen glass is made of a material that scratches at level 6, some at level 7.

Garnets are stable to light and chemicals which make it a popular choice to set in jewellery. However, it should always be cleaned with care as these gems are sometimes treated to make their appearance even more desirable. The most common treatment for this gem would be fracture filled: if there was a small fracture within the stone, it would be filled with resin or similar composite to fill in the gap and make it look “flawless”. The fillings can usually be spotted with a magnifier and causes a flash of light when positioned at the right angle.

In general, it is safe to assume garnets are untreated. But the economic impact on garnets such as demantoid and tsavorite can dictate whether a stone is treated or not. These two types are garnets are often considered to be the most desirable and usually found in small sizes, so their value goes up significantly with size.

Fabergé Platinum Round Demantoid & Diamond Set Halo Ring selling for £34,200. Mounted in platinum, it has a 2.50cts round demantoid garnet with an SSEF certificate indicating it is Russian, and has been heating to enhance colour, and set with 130 round white diamonds totalling 0.90ct.

If the budget doesn’t stretch that high, other garnets, like rhodolite, are far more common in larger sizes.

It’s easy to understand the appeal of garnet. It offers a multitude of different readily available hues to suit all sorts of budget. The key then when choosing an item with garnet is really to think with what outfit would look best with that colour.

Photomicrography – What it is and how it helps us in determining the value of a gem

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As a valuer and gemmologist I work with gemstones daily. Testing, grading and valuing coloured gems is a personal highlight of my work and it was around 5 years ago when testing a Ceylon sapphire that I first fell in love with photomicrography.

I noticed that viewing the stone under the microscope allowed me to dive deeper into understanding the gem and its value. Since then, what was a routine part of gem testing has become a hobby of mine and I can spend hours viewing one gemstone, trying to capture the perfect photomicrograph. In 2021 I was awarded second place in the Gem-A photography competition for this image.

So what is photomicrography?

Put simply, photomicrography is the photography of objects (gemstones in this case) under a microscope.

To begin, I start by thoroughly cleaning the gemstone or item of jewellery I am working on. It’s important not to have any dirt, grease, or dirt on the stone prior to inspection. I will then spend some time viewing the stone in several positions and angles to allow me to find the perfect inclusion scene for my photography. It’s not uncommon for me to spend 30 minutes just getting the perfect lighting and angle for my image. Sometimes I take several photographs at very slightly different focal lengths and then stack the images together using computer software. This can create a sense of depth within the finished piece. This image is made from a stack of 20 photomicrographs.

What can photomicrography tell us about a gemstone?

Natural or Synthetic?

With a higher level of zoom than a jeweller’s loupe, the microscope allows us a more in-depth view of the gem. This can allow us to determine if a gemstone is natural or synthetic; in this image of a synthetic ruby for example where we can see curved striae indicative of Verneuil Flame Fusion growth. In the case of natural stones, we may find crystal inclusions, colour-zoning and/or fingerprints. The microscope can also be a useful step in identifying synthetic diamonds.

Treatments

We can also detect treatments such as coating, dyeing and fracture filling. This image shows a natural ruby which has been lead-glass filled to improve its apparent clarity. This is an important treatment to be able to identify before carrying out any repairs as the filler is unstable and can degrade severely under high heat, like that of a jeweller’s torch – or by cleaning in ultrasonic or steam cleaners. You will see from the image that the surface of the stone appears ‘crazed’ under magnification. At a higher level of magnification we may also encounter bubbles within the glass, another tell-tale sign of treatment.

Heat treatment is considered a standard treatment within the trade for most gemstones but for sapphires and rubies most importantly, evidence of no heat treatment can increase the stone’s value greatly if the stone is otherwise of nice quality. This image shows undissolved rutile ‘silk’ inclusions within a Sri Lankan sapphire. This is evidence of no, or very low heat treatment and allowed me to value the stone accordingly.

In the following image we see amber containing ‘sun spangles’, which are indicative of heat treatment.

Origin Determination

Another important use of photomicrography is determining the origin of a gemstone. In this image we can see a three-phase inclusion which contains a liquid within a cavity, a gas, and a solid which in this case is a calcite crystal. There are also some blocky two-phase inclusions visible. This emerald was determined to be of Zambian origin. Determining the origin of a gemstone allows us to value it more accurately as some localities carry a premium, such as Colombian Muzo emeralds and Burmese sapphires and rubies from the infamous Mogok.

Let’s look at a price comparison to show how origin affects a gem’s value. In the case of this emerald from Zambia, the retail price per carat was £4950. The equivalent stone of same quality but with a Colombian origin would have a retail price per carat of £5850, that’s more than an 18% price difference.

Conclusion

For me, photomicrography is an incredibly useful tool which allows me to accurately value gemstones. But its also become a passion and something I thoroughly enjoy doing. I am always trying to improve on my image quality and find new stones with interesting inclusions which people may not have seen before. If you’d like to see more of my photomicrography, you can check out my Instagram page: Instagram.com/Sammantha_maclachlan_fga_ltd