Gems

_____________________________________________________ Green Diamonds
Orange Diamonds
Blue Diamonds
Red Diamonds
Champagne Diamonds
Black Diamonds

Kashmir Sapphire
The Valley of Rubies-Mogok Stone Tract
Art Deco Tutti Frutti Jewels
Top Private Jewel Collections
Gems of the Maharajah - Al-Thani Collection
Round Cut, also known as the brilliant cut, this is the most ubiquitous cut and shape, and the “Gold Standard” for diamonds. Some reports indicate that this cut accounts for up to 75% of diamonds sold today.

Oval Cut this cut is new, it was pioneered in the 1960s. This is an even and perfectly symmetrical design featuring 56 facets. Like the marquise, it is a modified round cut.
Marquise Cut legend has it that the diamond-loving French King, Louis XIV commissioned this cut to match the unrivalled smile of the Marquise de Pompadour.

Pear Cut the oval and marquise cuts come together brilliantly in the pear cut. Technically this is a modified round cut with 58 facets.
Princess Cut, comes from the 1980s, but has proven very popular in North America. This is a square or rectangular cut that often burns more brightly than the typical round cut. Another more material advantage of the princess cut is that it requires the least amount of wastage of the rough stone of all cuts.

Heart Shape this happens when you take the pear cut and put a cleft at the widest point. As a symbol of romance, this cut cannot be beaten, but it certainly earns no points for subtlety. It works best with larger stones, and is not typically as available as the round cut; this cut takes more skill to accomplish properly.
Asscher Cut the Asscher Company of Amsterdam developed this cut in the early 20th Century, this brilliant square is the ancestor of the radiant cut. The idea was to combine the emerald cut with the round cut.

Trilliant Cut also developed by the Asscher company, and brought to New York in the 1960s, this cut is exceptional in its scintillating properties. Essentially triangular, it is distinguished by curved or straight sides, with pointed corners or rounded ones.
Rose Cut Various forms of the rose cut have been in use since the mid 16th century. The basic rose cut has a flat base and a crown composed of triangular facets in symmetrical arrangement, which rise to form a point. They are usually circular.

Radiant Cut by combining the round and the emerald cuts, gem cutters developed this cut in the 1970s.
Cushion Cut is an update of the Old Mine cut from the 18th Century, it is a pillow-shaped cut with 58 facets, this cut has stood the test of time.

Emerald Cut is a rectangular shape with cut corners. It is a very old cut that is unforgiving to inferior stones.
Baguette Cut gained popularity during the Art Deco period, it is basically a modified emerald cut. Typically long and rectangular, the baguette-cut diamond has octagonal corners and step cuts, with just 14 facets.

3-Dimensional Cuts, these cuts are all identical all around, with patterns repeated across the stone. Where the typical stone shows a main face to the world, these cuts are designed to be truly multi-faceted.
The Hope Diamond may be the most famous coloured diamond in the world. GIA graded the cushion antique brilliant of 45.52 carats as Fancy dark grayish blue.

GIA described the 41 carat Dresden Green as Fancy green, with a modified pear-shaped brilliant cut. The green has medium tone and slightly grayish saturation.
The Portuguese Diamond weighs 127.01 carats and is colour graded M with a VS1 clarity. The Portuguese has a strong blue fluorescence.

The Idol’s Eye weighs 70.20 carats. Its colour grade is Very Light blue and its clarity is VVS1.
The Moussaieff Red weighs 5.11 carats and is the largest pure red diamond known to exist. It was cut and polished from a 13.9 carat rough.

The 30.62 carat Fancy Deep blue Blue Heart Diamond.
The two stone Bvgari Blue made $ 15.76m at auction. It features a 10.95 carat VS2 Fancy Vivid blue diamond, and an 8.87 carat G colour VS1 diamond.

The Pumpkin Diamond is Fancy Vivid orange and 5.54 carats.
The most well-known champagne diamond is the Golden Jubilee. It weighed 755 carats rough and resulted in a 545.67 carat gemstone. It's the largest faceted diamond in the world. Discovered in South Africa's Cullinan Diamond Mine in 1985, it was given to the King of Thailand in 1997 to celebrate his reign.

The Great Chrysanthemum Diamond is a fancy brown pear shaped modified brilliant cut that measures 104.15 carats. The diamond originated in South Africa.
The 59.60 carat Flawless Fancy Vivid pink Pink Star was formerly known as the Steinmetz Pink.

The 101.29 carat cushion cut Allnatt is graded Fancy Vivid yellow.
The Golden Maharajah diamond was shown at the Paris World Fair of 1937 and was later loaned to the American Museum of Natural History for 15 years by its owner, Ella Friedus. The Gemological Institute of America reported the 65.57-carat gem as being Fancy Dark Orange-Brown, having VS2 clarity.

The Tereschenko Diamond is 42.92-carat,fancy blue, pear-shaped stone. It was part of the Tereschenko family as a loose stone until it was set in a diamond necklace by Cartier in 1915. In 1984 the diamond was sold for $4.5m

The tiara was fashioned by Harry Winston for Empress Farah for her wedding to the last Shah of Iran in 1957.
Noor-ol-Ein Diamond: also known by the alternate spelling Nur-Ul-Ain Diamond. It's one of the largest pink diamonds in the world said to have originated from India. It's an oval diamond brilliant cut diamond that measures 60 carats. It is currently set in a platinum tiara with other pink, yellow, and colourless diamonds.
The pride of the Topkapi Palace Museum in Istanbul, Turkey and its most valuable single exhibit is the 86-carat pear-shaped Spoonmaker Diamond, also known as the Kasikci.

It is an 86 carats pear-shaped diamond, surrounded by a double-row of 49 old mine cut diamonds.
The Star of the South was the first Brazilian Diamond to achieve world recognition. It was found by a slave worker in 1853. After passing through several buyers and sellers, the stone made its way to Amsterdam for cutting.

The result is a stone that measures 128.42 carats and is a light pinkish brown color. The stone was displayed in the London Exhibit in 1862 and the Paris Exhibit in 1867, after which it was purchased for $400,000 as a gift for Sita Devi, the Maharani of Baroda. The stone was then purchased by Cartier in 2002.
The Great Chrysanthemum Diamond is a fancy brown pear shaped modified brilliant cut that measures 104.15 carats. The diamond originated in South Africa, was cut in New York by S&M Kaufman, and was named after it's similarity to the brown chrysanthemum flower.

The current owner of the diamond is unknown.
The Chopard Chameleon Diamond is a 31.32 carat oval-cut chameleon diamond and the largest known.

The chameleon diamond has the ability to temporarily change colour after heating or long storage in the dark.
The Nur-ul-ain, “light of the eye” is a brilliant-cut oval diamond of around 60 carats. Together with the even larger Darya-i-noor diamond, it is considered one of the two most-celebrated gems among the Iranian crown jewels.
The Darya-i-noor, ‘sea of light’ is the world’s largest pink diamond, weighing 186 carats. It is table cut with exceptional clarity. The diamond came from India's famous Golconda mine and is part of the crown jewels of Iran.
The Portuguese Diamond weighs 127.01 carats and is graded M in color and VS-1 in clarity, with very strong blue fluorescence. Its unusual octagonal emerald cut makes it one of the world's most magnificent gems.
The Moon Of Baroda is a 24.04 carat canary yellow diamond once worn by both Empress Therese of Austria and Marilyn Monroe.
The Love At First Sight diamond. A heart shaped diamond weighing 56.15 carats with a rating of IF Type IIa, color D. It was originally cut from the Cullinan Diamond. The diamond fetched $12 million at a Christie’s auction in 2011.
The Shizuka Diamond - is the largest colorless diamond to have sold at an auction in Asia. The shield-shaped diamond features 92 facets. It was carved out of a rough diamond of 460 carats.

It sold for $6.21m in February 2009.
Flawless Blue Diamond - it took 15 minutes via telephone for this flawless blue diamond to command a record price at a Sotheby’s auction in Geneva in 2009. The stone brought $9.3 million or $1.3 million per carat.
The Chloe Diamond is a brilliant-cut diamond, weighing 84.37 carats, bought by Georges Marciano, the founder of clothing company Guess Inc. Marciano named the stone “the Chloe Diamond” after his then 12-year-old daughter.

The diamond sold for $16.2 Million at Sotheby's Geneva in 2007.
In November 2012, Christie's sold the cushion-shaped, colourless, 76.02-carat Archduke Joseph Diamond for $21.5 million.
A 14.23 carat diamond, named The Perfect Pink, sold for $23,165,968 in November 2010 to an anonymous buyer after an intense bidding war with four others.

Christie's says only 18 diamonds bigger than 10 carats and showing a distinct pure pink colour have ever gone on the block in 244 years of auction history.
The Wittelsbach-Graff Diamond is a cushion-cut fancy deep grayish blue diamond weighing 35.56 carats. It sold at auction in December 2008 for $24.3m

The diamond originates from the Indian kingdom of Golkonda. It's rumored that King Philip IV of Spain purchased the jewel and included it in the dowry of his teenage daughter, Margaret Teresa, in 1664.
On 15 May 2013 Christie’s auctioned the "Winston Legacy" in Geneva for $ 26.7m. A pear-shaped perfect diamond weighing 101.73 carats, this sensational gemstone is not only one of the largest pear-shaped diamonds known to date, it is also one of the world’s most perfect diamonds: a D colour, Type IIA Flawless gem.

The rough stone weighed 236 carats when it was extracted from the Jwaneng mine (DeBeers) in Botswana and required 21 months to polish.
The Orange - Christie’s Geneva sold the largest fancy vivid orange diamond ever offered at auction, weighing 14.82 carats, for a record $35.5m or $2.4 million per carat.

The sale set a world record price per carat for any diamond sold at auction, as well as a world record price for an orange diamond. It is the 4rd most expensive diamond ever sold at auction. Christie's said: “Time and again, a stone will appear on the market that is truly a miracle of nature. The 14.82-carat orange diamond is one such a stone, a rare gem, which will perhaps only be seen once in a lifetime.
The Princie Pink is a cushion-cut 34.65 carats and is one of the finest and largest of its kind.

The stone can be traced back to the ancient diamond mines of India. The diamond was sold at auction in 1960 where it brought a price of 46,000 pounds sterling (approximately $69,588 in today's currency).

The stone sold for $ 39m in April, 2013.

The Graff Pink is a vivid pink, round-cornered rectangular step-cut diamond weighing 24.78 carats, set between shield-shaped diamond shoulders, in platinum.

It sold on November 10, 2010 for $ 46.2m



The 59.6-carat Pink Star diamond lived up to its hype by selling for a world record price of approximately $83.4 million at Sotheby’s Geneva Magnificent Jewels sale Wednesday.

When introducing the internally flawless fancy pink vivid diamond, David Bennett, chairman of Sotheby’s Jewellery Division in Europe and the Middle East, called it “one of the most remarkable gems to ever appear at auction.”
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Sotheby's David Bennett says the diamond belongs in "the ranks of the earth's greatest natural treasures." He said "it was very rare to have vivid pink diamonds weighing only five carats, this 59.60 carat stone is simply off any scale." It is over twice the size of the 24.78-carat "Graff Pink" diamond that set the world auction record for $46.2m.

The gem, which was mined by De Beers in Africa in 1999, has received the highest possible colour and clarity rating from the Gemological Institute of America (GIA). It weighed 132.5 carats in the rough, and was cut and polished over a period of two years by Steinmetz Diamonds.


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Blue diamonds seldom hit the market and have been coveted by royals and celebrities for centuries, while a round cut is rarely used in coloured stones because of the high wastage.

The term "fancy" is used to describe a diamond of intense colour, while a gem's saturation grading ranges from light to vivid for coloured diamonds. In April, a rare 5.3-carat fancy deep-blue diamond was sold for £6.2 million ($9.5 million) at a London auction, then setting a record for price-per-carat at $1.8 million.
The Blue Empress is a spectacular 14 carat, symmetrical pear-shaped, fancy vivid blue diamond.

The stone was mined at the Premier Diamond Mine in South Africa and was purchased from De Beers by the Steinmetz Group. It was first offered for sale by London’s Harrods in 2003 for £10 million.
The 67.50-carat, cushion-cut Black Orlov is named black but is the colour of gun metal. Like the story behind the famous Hope diamond, legend has it that the Black Orlov was an uncut black stone of 195 carats, pried out of the eye (forehead) of the statute of the sacred Hindu God Brahma from a temple in Southern India.

The diamond turned up in Russia, where it was bought by Princess Nadia Vyegin Orlov. It was purchased in 1947 by Charles F Winson who sold it to an unknown buyer in 1969 for $300,000.
The Paragon Diamond is one of the more unusually shaped diamonds. It is a 7 sided diamond that measures 137.82 carts and is rated a flawless D in color. The necklace currently belongs to the Graff Company and is set in combination necklace - bracelet setting.

The gem was mined in Brazil.
The Donnersmarck Diamonds are two yellow diamonds, named after their one time owner Henckel von Donnersmarc. One, a baguette-shaped diamond weighing 102.54 carats, was sold for $3.246 million.

The second, tear drop in shape and weighing 82.48 carats, was sold for $4.666 million.
The Sun-Drop Diamond at 110 carats is the world’s largest yellow diamond. It sold at auction for $10.91m in 2011.

It was found in South Africa in 2010. The stone was cut as a Pear Brilliant, also called Drop Cut.
The Kazanjian Red Diamond is an extraordinary 5.05-carat red gem on temporary display in the Museum's Morgan Memorial Hall of Gems. Red diamonds are the rarest among colored diamonds. Only three 5-carat red diamonds are known to exist: the Kazanjian Red diamond, the trilliant-cut 5.11-carat Moussaieff Red, and the 5.03-carat De Young Red.

The original 35-carat piece of rough was discovered in Lichtenburg, South Africa
The Spoonmaker's Diamond is a 86 carat pear-shaped diamond, pride of the Imperial Treasury exhibitions at the Topkapi Palace Museum, Tehran.
The Victoria-Transvaal is a 67.89-carat, champagne-colored, pear shaped stone. It was cut from a 240-carat crystal that was found in the Transvaal, South Africa.

The necklace consists of a yellow gold chain with 66 round brilliant-cut diamonds, fringed with ten drop motifs, each set with two marquise-cut diamonds, a pear-shaped diamond, and a small round brilliant-cut diamond (the total weight of the 106 diamonds is about 45 carats). The necklace was donated by Leonard and Victoria Wilkinson in 1977 to the Smithsonian Institute
The Conde Pink Diamond obtains its name from Louis II de Bourbon, the Prince of Conde and the leader of the French Army, who was offered the diamond as a token by King Louis XIII of France in 1643.

The Conde Pink diamond is a plastically distorted Type IIa diamond.
The Pink Sunrise is a 29.79-carat, fancy pink, internally flawless (IF), diamond, with a modified heart shape.

The diamond was cut by the world renowned master cutter Gabi Tolkowsky and the finished stone was unveiled to the world at the beginning of the 21st century.
The Allnatt diamond is a cushion-cut, 101.29-carat, fancy bright yellow diamond with a VS-2 clarity. The diamond was obtained by Major Alfred Earnest Allnatt in the early 1950s in South Africa.

The Deepdene is a 104.52 carat vivid yellow diamond widely considered to be the largest irradiated diamond in the world. On 27 May 1971, Christie's auction house in Geneva offered the cushion-cut, fancy golden-yellow diamond which would only later come to be known as the "Deepdene."

After being sold to Van Cleef & Arpels for a reported £190,000 the Deepdene was sent to the Gem Testing Laboratory in London, England. Van Cleef & Arpels promptly returned the stone for a refund, leaving it somewhat of an unwanted orphan. Its current whereabouts is unknown.
The Blue Empress is a spectacular 14 carat, symmetrical pear-shaped, fancy vivid blue diamond.

The stone was mined at the Premier Diamond Mine in South Africa and was purchased from De Beers by the Steinmetz Group. It is a relatively recent find and was first offered for sale by London’s Harrods in 2003 for £10 million.
The Florentine Diamond is a lost diamond of Indian origin. It is light yellow in colour with very slight green overtones. It is cut in the form of an irregular (although very intricate) nine-sided 126-facet double rose cut, with a weight of 137.27 carats.

After the fall of the Austrian Empire during World War I, the stone was taken by Charles I of Austria into exile in Switzerland. The stone was stolen some time after 1918 by a person close to the Imperial family and taken to South America with other gems of the Crown Jewels. After this, it was rumoured that the diamond was brought into the United States in the 1920s and was recut and sold.
The Sun-Drop Diamond at 110 carats is the world’s largest yellow diamond. It sold at auction for $10.91m in 2011.
The Hortensia Diamond. Named after the Queen of Holland, the rock glittered on Napoleon's epaulette braid fastening and, later, on Empress Eugenie's comb. After the French Revolution, the diamond was snatched and later found in a bag of treasures in the attic of an old house in Paris. According to lore, the man who stole the precious gems disclosed the secret location just before his execution. Today, it's held in the Louvre's Gallerie d'Apollon.
The Blue Heart weighs 30.82 carats finished and was first recorded around 1900. The stone changed hands several times until it was donated to the Smithsonian Institution in Washington D.C. where it remains to this day.
The Ashberg diamond is one of the first diamonds discovered in South Africa in the mid 1860s and used to be part of the Russian Crown Jewels, a collection that started in 1719. After the 1920s, the Crown Jewels were transferred to the Kremlin Diamond Fund. In 1934 a Russian trade delegation sold the diamond to Mr. Ashberg.
The stone is 102.48 carats and is amber or brownish yellow with a glance of orange. (type Ib)
The DeYoung Red Diamond is one of the largest known natural fancy dark red diamonds. It is a modified round brilliant cut diamond that has a clarity grade of VS-2 and weighs 5.03 carats. The diamond was acquired by S. Sydney DeYoung, a Boston jeweler, as part of a collection of estate jewelry in which it was wrongly identified as a garnet. It was gifted to the National Gem Collection by Mr. DeYoung in 1987.
The Sancy weighs 55 carats and is a pear shape. It was first owned by Charles the Bold, Duke of Burgundy, who lost it in battle in 1477. The stone is named after a later owner, Seigneur de Sancy, a French Ambassador to Turkey in the late 16th century. He loaned it to the French king, Henry III, who wore it in the cap with which he concealed his baldness. Henry IV of France also borrowed the stone from Sancy, but it was sold in 1664 to James I of England. In 1688, James II, last of the Stuart kings of England, fled with it to Paris. It disappeared during the French Revolution. It reappeared in 1828. In 1867 it was displayed at the Paris Exposition. The Sancy surfaced in 1906 when bought by William Waldorf Astor, 1st Viscount Astor. The family possessed it for 72 years until the 4th Viscount Astor sold it to the Louvre for $1 million in 1978. The Sancy now rests in the Apollo Gallery.
The Koh-i-Noor, ("Mountain of Lights"), is a 105.6 carat diamond, believed to have originated in the state of Andhra Pradesh in India around 1300. It has been said that whoever owned the Koh-I-Noor ruled the world.

In 1850, the diamond was confiscated from Duleep Singh by the British East India Company and became part of the British Crown Jewels when Queen Victoria was proclaimed Empress of India in 1877. The diamond is currently set into the Crown of Queen Elizabeth and is on display at the Tower of London.
The Steinmetz Sirius is a 103.83 carat D IF cushion shaped diamond mined from the Premier mine in South Africa.

This legendary cushion shaped stone is claimed to be one of the largest D colored, internally flawless diamonds to ever appear at auction and is only the fourth of its kind (over 100 carat) to be sold at auction.
The Kimberley Diamond gets its name from the mine in South Africa where it was found sometime before 1868. It was cut from a 490-carat stone. It was turned into a 70-carat gem in 1921 and recut to its present form in 1958 to improve its brilliance and proportions.