A “toi et moi” ring featuring a 3.61 carat fancy vivid yellow, internally flawless, pear-shaped diamond sold for $254,000 at the Phillips New York Jewels Auction.
It beat its low estimate of $240,000 but fell short of its $300,000 high estimate.
The platinum ring (pictured) set with a 5.03 carat D Color, internally flawless pear-shaped white diamond as well as the yellow diamond and isaccented with brilliant-cut diamonds and similarly cut diamonds of yellow tint.
Overall 70 per cent of lots were sold (by number and by value) raising a total of $2.58m
The auction, on 13 December, featured 146 lots with a strong emphasis on colored diamonds and gemstones, antique-cut diamonds, and signed pieces from renowned makers.
Cristina Rodrigo, specialist and head of sale, jewels, New York, said there was “a great deal of participation from across the globe, leading to strong prices for important pieces spanning style and price points”.
A pair of fancy vivid orange-yellow diamond earrings sold for almost $8m at Christie’s Hong Kong.
They were the lead item in the Magnificent Jewels sale that raised just over $60m on 29 October.
The Oriental Sunrise earrings feature a pair of Type 1b oval mixed-cut diamonds – 12.20 carats (VVS2) and 11.96 carats (VS1) – surrounded by white shield and tapered baguette-cut diamonds, set in platinum and gold. The pre-sale estimate for the earrings was $6.4m to $10.3m.
Among other highlights was a necklace of 26 oval-shaped rubies (5.38 carat to 1.27 carat), some of them listed as “pigeon blood red” – with white pear and marquise-shaped diamonds, that sold for $6.4m.
A Cartier ring, set with a Type IIa 12.60-carat D-color, IF clarity round-cornered rectangular brilliant-cut Goloconda diamond, sold for $1.4m. The high estimate was $1.1m.
A flawless 16.92 carat vivid yellow diamond was unveiled last week at Jewellery & Gem World Hong Kong.
Mumbai based Venus Jewel says the radiant shaped natural diamond is one of the “most coveted diamonds” it has released in its 55 year history.
It was cut from a 28.78 carat rough stone. Natural vivid yellow colored diamonds are extremely rare. One out of approximately 10,000 carats mined is a natural fancy color diamond. Of those only a small percentage are fancy vivid, the highest grading for color saturation and brilliance.
“We are delighted to present the Yellow Lava, a true testament to our craftsmanship, energy and dynamism,” said Rajesh Shah, a partner in the company.
“The name Yellow Lava is derived from its evenly distributed vivid yellow color and flawless clarity.”
Congratulations are in order for Gordon Ramsay’s daughter, Holly, and her partner Adam Peaty.
The couple announced the news of their engagement on Thursday, Sept. 12, with an Instagram post filled with romantic couple’s photos and close-ups of Holly’s unique ring.
Peaty, a 29 year old swimmer and Olympic gold medalist, worked with Pragnell on the rock, which boasts a large yellow diamond on a gold band. On his Instagram Stories, the athlete revealed the ring took 10 months to come together.
“I trusted you with my vision and you delivered,” he wrote over a picture of Holly wearing the sparkler. “It’s perfect.”
In the carousel of snapshots, Holly wore a white bikini top and baby pink manicure, which complemented the colorful gemstone.
Proud dad Gordon, 57, shared well wishes to his 24 year old on Instagram.
“Congratulations to this gorgeous girl hollyramsayy. So happy for you and adam_peaty ! Hols, watching you become the woman you are today with your kindness and your love is absolutely infectious. Adam is a very lucky man! Welcome to the family,” he wrote.
Holly and Peaty became Instagram official on July 10, 2023, and in her engagement post on Instagram, she expressed how excited she is to wed her “best friend.”
“I truly cannot put into words how I am feeling right now. I still remember how big my smile was the morning I got home from my first date with you,” she wrote.
“Thank you for letting the little girl inside of me feel loved, seen and happier than ever. I love you & I cannot wait to be your wife.”
A 45.07 carat fancy vivid yellow diamond is forecast to sell for $2.8m to $3.5m at Phillips New York on Wednesday (12 June).
It leads the New York Jewels Auction, featuring colored diamonds and gemstones, period jewelry, and signed jewels by Cartier, Bulgari, and Van Cleef & Arpels.
The square emerald-cut VS1-clarity stone has classic step-cut faceting, considered an unusual choice to best show off the color and draw out the illusion of greater saturation.
The Fancy Color Research Foundation (FCRF) gives the diamond a total visual score of 11 out of 12, based on inner grade (3), color dispersion (4) and undertone (4), noting that despite its depth percentage, excellent polish and symmetry grades, its visual presence translates to “a diamond appearing smaller in carat weight”.
The diamond will realize $77,657 per carat if it hits its high estimate. In March a 15.51-carat VS2 fancy vivid yellow diamond sold for $1.14m – $73,253 per carat – at Phillips Hong Kong Jewels Auction, beating its low estimate.
Australia’s Gibb River Diamonds is getting closer to restarting the mothballed Ellendale diamond mine in West Kimberley after being granted three mining leases that are key for the project.
The permits mark a significant step in reviving production at Ellendale, which was a major diamond producing mine. The operation was particularly know for being a source of fancy yellow diamonds, being responsible for more than 50% of the annual world’s supply until it was shut down in 2015.
As part as the reopening steps, Gibb River said it is scheduled to conduct a heritage clearance survey in the first week of June. The company is also studying financing options for the project, including debt, equity, earn-in partner, joint venture partner, a North Australian Infrastructure Fund (NAIF) partnership, or other government funding schemes available.
The exploration and development company became Ellendale’s sole owner in March last year, after acquiring the project from Burgundy Diamonds.
Shares in the company soared on the news, closing 48% higher at 37 Australian cents each. This leaves Gibb River Diamonds with a market capitalization of A$6.52 million ($4.4m).
Geneva Christie’s went ahead with two of its Geneva auctions, one for jewelry and one for watches, despite the fact that its website has been down since late last week following a cyberattack.
“The Yellow Rose” diamond, pictured above, was the top lot in its “Magnificent Jewels” sale in Geneva.
The 202 ct. Yellow Rose diamond sold for $6.7 million at Christie’s Magnificent Jewels sale in Geneva on Wednesday.
On Tuesday, a smaller but historically significant yellow diamond the 101.29 ct. fancy vivid Allnatt was pulled from Sotheby’s Magnificent Jewels auction at the last minute, despite carrying a $6.1 million to $7 million estimate.
A yellow diamond ring was the star of the most recent jewelry sale at Phillips in Hong Kong, fetching HKD 8.9 million ($1.1 million).
The round brilliant-cut, 15.51-carat, fancy-vivid-yellow, VS2-clarity diamond ring fell within its estimated range at the March 28 Hong Kong Jewels auction, Phillips said last week. In total, the sale achieved HKD 32.3 million ($4.1 million), with 73% of items finding buyers.
“The sale total for our spring auction in Hong Kong increased by 20% over the previous season, demonstrating the resilience of the global demand for rare and important jewels across the board,” said Benoît Repellin, worldwide head of jewelry for Phillips. “Fancy colored diamonds commanded the sale…. Vintage signed pieces also performed well. We also saw notable demand for [the] finest Burmese rubies, emeralds and sapphires.”
Here are the rest of the top five jewels at the sale:
This Van Cleef & Arpels necklace, created in 1985, is set with alternating brilliant-cut diamonds and round cabochon turquoises, supporting a fringe of pear-shaped cabochon turquoises. It realized HKD 4.6 million ($584,302), nearly four times its HKD 1.2 million ($150,000) high estimate.
A ring bearing a pear-shaped, 2.65-carat, fancy-intense-orangey-pink, VS1-clarity diamond brought in HKD 2.9 million ($373,304), within estimates.
Phillips sold this brilliant-cut, 5.53-carat, D-color, VVS1-clarity diamond ring for HKD 1.9 million ($243,459), at the upper end of its price range.
A bracelet with 12 cushion-shaped, oval and circular-cut Burmese rubies weighing approximately 24.59 carats in total, as well as kite-shaped diamonds, went for HKD 1.5 million ($194,767), missing its HKD 1.8 million ($230,000) lower presale price.
A 133.03 carat Fancy Vivid Yellow diamond achieved a sale price of more than $5.5 million, becoming the largest fancy vivid yellow diamond to sell at auction.
This was the top lot at Sotheby’s December 5 Magnificent Jewels auction in New York. The unmounted cushion modified brilliant-cut gem with VS2 clarity surpassed its high estimate of $5 million.
The diamond was purchased by Diacore, a diamond manufacturer best known for crafting rare, exceptional diamonds and high-end jewelry.
The company also has a joint partnership with Sotheby’s called “Sotheby’s Diamonds,” in which they manufacture and market diamonds specifically for private sale at Sotheby’s locations in London, New York and Hong Kong.
A 10.19-carat yellow diamond ring will lead an upcoming auction at Bonhams in London, where it is set to fetch up to GBP 160,000 (approximately $199,300).
Bonhams will offer the radiant-cut, fancy-intense-yellow, VS1-clarity stone, set between shield-cut diamond shoulders, at its December 7 London Jewels auction, it said Tuesday.
Two additional yellow diamonds for sale include a brilliant-cut, 10.02-carat, fancy-yellow diamond single-stone ring and a step-cut, 8.45-carat, fancy-yellow diamond ring accented by four pear-shaped diamonds set between baguette and step-cut diamond shoulders. Both pieces carry estimates of GBP 50,000 to GBP 70,000 (approximately $62,300 to $87,200).
The 149-lot auction will also feature pieces from multiple single-owner private collections, spanning from 1870 to the modern day. These comprise jewels from Cartier, Bulgari, Graff, Moussaieff, Van Cleef & Arpels, Harry Winston, Boucheron, Tiffany & Co., David Webb, and Grima.
Highlights from a single-owner private European collection are a Lalique Art Nouveau enamel, pâte-de-verre, sapphire and diamond pendant from around 1905 to 1915; a Cartier Panthère coral, emerald, onyx and diamond brooch, circa 1968; and a Cartier ruby and diamond clip and ear clip suite brooch combination that dates to about 1960.
Another collection, from a descendant of Dorothy Maud, Countess Haig, boasts a pearl and diamond tiara necklace presented to the countess by Queen Alexandra in 1905 on her marriage to General Haig.
A pair of fancy vivid orange-yellow diamond earrings weighing 12.20 and 11.96 carats will be the top lot at Christie’s Magnificent Jewels sale on December 6 in New York. The earrings, which are named “California Sunset Diamonds,” are estimated at $7 million – $12 million.
A ring with a similar fancy vivid yellowish orange diamond weighing 5.16 carats has an estimate of $1.5 million – $2 million.
A 5.16-carat fancy vivid yellowish orange diamond has an estimate of $1.5 million – $2 million CHRISTIE’S
There haven’t been many details released yet for Christie’s final jewelry auction of 2023, but the sale will include several fancy colored diamonds, white diamonds and colored gems. As always, there will be signed jewels from important collections.
In celebration of Haute Couture Week, Graff is exhibiting a collection of yellow diamonds at its flagship Paris boutique to complement the unveiling of its new high jewellery necklace
Launched yesterday (4 July 2023), visitors to Sunrise: A Celebration of Graff Yellow Diamonds will discover a world of rarity and lustre through a stunning showcase of high jewellery pieces featuring rare yellow diamonds, accompanied by displays detailing Graff’s storied history with these incomparable stones.
The House’s latest high jewellery creation features an extremely rare 30ct fancy intense yellow pear shape diamond, accompanied by a further 138ct of yellow and white diamonds.
Every element of the piece has been created using the stone-led design techniques for which the Graff atelier is renowned and has been crafted to emphasise the elegant silhouette of the centre stone.
Graff design director, Anne-Eva Geffroy explained: “Before we design, we study each diamond carefully to uncover the secrets that lie within its depths.
“Only then do we design, and when we do, we work to accentuate the natural beauty of each stone.
“The fancy intense yellow diamond set into this piece gives a golden sunshine glow.
“Yellow diamonds bring so much joy.
“It is an honour to be inspired by stones that radiate such beauty.
“The yellow diamonds we work with are exceptional in quality, cut, and quantity.
“Very few jewellers have the luxury of such a wide range of colour.”
In vibrant halos of yellow and white diamonds, stones radiate outwards from the central fancy intense yellow diamond to replicate the rays of the sun.
A perfect synthesis of diamond design and hand-craftsmanship, each bespoke setting has been meticulously assembled by master artisans within the House’s London workshop.
CEO of Graff, Francois Graff added: “Celebrating Graff’s legacy of innovation and leadership in presenting the highest quality rare diamonds, this will be the most significant collection of yellow diamonds that have ever been brought together in one place, including a fancy intense yellow stone of incomparable beauty.
“These are truly jewels that represent the very best of Graff.”
Further pieces on display in the showcase at the flagship Paris boutique include unique high jewellery necklaces, Tribal-inspired jewels, earrings, and single-stone rings that unmistakably express Graff’s design DNA through the combination of superb stones with bold designs and unparalleled craftsmanship.
An impressive roster of important and famous yellow diamonds have passed through the House over the course of its history, beginning with the Star of Bombay in 1974.
The Star of Bombay is an historical yellow stone that was re-cut and polished by Graff using revolutionary expertise and new techniques.
Since then, Graff has introduced many famous and historical yellow diamonds over the years, including the 118.08ct Delaire Sunrise and the 132.55ct honey-hued Golden Empress.
Sunrise: A Celebration of Graff Yellow Diamonds is currently exhibiting at Graff Rue Saint-Honoré throughout Haute Couture Week in Paris.
Argyle pink diamonds are extremely rare and highly sought-after, making them some of the most valuable diamonds in the world. The Argyle diamond mine in Western Australia is the primary source of pink diamonds, and it is estimated that only 0.01% of the diamonds recovered from the mine are pink in colour, with an even smaller percentage being of the highest quality.
The Argyle mine ceased operations in 2020, which has led to speculation that the prices of pink diamonds, including argyle pink diamonds, may increase in the coming years. With the mine no longer producing new stones, the limited supply of these rare diamonds is expected to drive up demand and prices. However, like any investment, it’s important to carefully consider market trends and consult with a qualified professional before making any decisions.
The largest pink argyle diamond found to date is the Argyle Pink Jubilee, which was discovered at the Argyle mine in Western Australia in 2011. The diamond weighs 12.76 carats and is a vivid pink colour, making it one of the largest and most valuable pink diamonds ever found. The Pink Jubilee was cut and polished over a period of ten months, during which time the rough diamond was studied and analyzed extensively to determine the best way to bring out its natural beauty and maximize its value. The diamond was sold at auction in 2013 for an undisclosed sum, but it is believed to have fetched a record-breaking price per carat for a pink diamond.
Red diamonds are extremely rare, even more so than pink diamonds. It is estimated that only a handful of natural red diamonds are found each year, and most of them are less than half a carat in size. Red diamonds are so rare that many jewelers and gemologists may go their entire careers without ever seeing one.
The red colour in diamonds is caused by the presence of a rare mineral which causes “graining,”, This occurs when the crystal structure of the diamond is distorted during its formation. The graining causes the diamond to absorb green light and reflect red light, resulting in a beautiful and distinctive red hue. Because of their rarity, red diamonds are among the most valuable and expensive gemstones in the world. They are highly sought-after by collectors and investors, and prices for top-quality stones can reach millions of dollars per carat at auction.
Blue diamonds are also quite rare, but not as rare as pink or red diamonds. Blue diamonds account for only about 0.02% of all diamonds mined worldwide. The blue colour in diamonds is caused by the presence of trace amounts of boron during their formation, which causes the diamond to absorb red, yellow, and green light, resulting in a blue hue.
Blue diamonds are highly prized for their unique colour and rarity, and they can command very high prices at auction. The value of a blue diamond depends on a variety of factors, including its size, colour intensity, clarity, and overall quality. Blue diamonds range in colour from pale blue to vivid blue, with the most valuable stones being those with a deep, rich blue colour.
One of the most famous blue diamonds is the Hope Diamond, which is a 45.52-carat blue diamond that is part of the Smithsonian Institution’s collection of natural history specimens.
The most expensive diamond ever sold is the Pink Star, a 59.60-carat oval-cut pink diamond that was sold for $71.2 million at a Sotheby’s auction in Hong Kong in 2017. The diamond, which is the largest internally flawless fancy vivid pink diamond ever graded by the Gemological Institute of America (GIA), was mined in Africa in 1999 and took two years to cut and polish.
The Pink Star was originally sold at auction in 2013 for a record-breaking $83 million, but the sale was later cancelled after the buyer defaulted on the payment. The diamond was put back up for auction in 2017 and sold to a jewelry retailer in Hong Kong for $71.2 million, setting a new world record for the most expensive diamond ever sold at auction.
Yellow diamonds are not as rare as pink, red, or blue diamonds, but they are still considered rare and highly prized. Yellow diamonds are formed when nitrogen atoms are trapped in the crystal lattice structure of the diamond during its formation, causing it to absorb blue light and reflect yellow light.
The intensity of the yellow colour in a diamond can vary widely, ranging from a pale yellow or light lemon colour to a deep, intense yellow. The most valuable yellow diamonds are those with a deep, rich colour that is evenly distributed throughout the stone.
Yellow diamonds are mined in various parts of the world, including South Africa, Australia, and Canada. While yellow diamonds are not as rare as some other coloured diamonds, high-quality yellow diamonds can still command very high prices at auction, especially those with a large carat weight and intense colour.
Orange diamonds are considered rare and highly valuable. The orange colour in diamonds is caused by the presence of nitrogen and other impurities in the crystal lattice structure of the diamond, which absorb blue and green light, resulting in an orange hue.
Orange diamonds can range in colour from pale orange to a deep, vivid orange, with the most valuable stones being those with a pure and intense colour. Orange diamonds are not as commonly found as white or yellow diamonds and are considered much rarer than brown or gray diamonds.
The most famous orange diamond is the Pumpkin Diamond, a 5.54-carat fancy vivid orange diamond that was mined in South Africa. The Pumpkin Diamond was sold at auction in 1997 for over $1.3 million, and it is now part of the collection at the Smithsonian Institution’s National Museum of Natural History in Washington, D.C.
The 303.10-carat Golden Canary fetched $12.4 million at Sotheby’s Magnificent Jewels in New York on Wednesday, becoming the third most valuable yellow diamond ever sold at auction, the company reported.
The pear-shaped, fancy-deep-brownish-yellow stone is the world’s largest known internally flawless diamond. It is also the largest flawless or internally flawless diamond graded by the Gemological Institute of America (GIA), Sotheby’s said Thursday. The auction house offered the piece without reserve, but predicted it would bring in more than $15 million.
The diamond was initially discovered in the Democratic Republic of Congo (DRC) in the early 1980s. Originally called the Incomparable Diamond, the stone was recut from its previous 407-carat shield shape to deepen the color and brighten the hue.
“The Golden Canary captivated me from the moment I saw it — with its monumental size, golden hue and impeccable clarity — it is truly an extraordinary diamond with immense presence,” said Quig Bruning, head of jewelry for the Americas at Sotheby’s.
Sotheby’s will offer a yellow diamond weighing more than 300 carats at its upcoming New York auction, where it is expected to bring in more than $15 million.
The pear-shaped, 303.10-carat, fancy-deep-brownish-yellow stone is one of the largest polished diamonds in the world. It is also the largest flawless or internally flawless diamond ever graded by the Gemological Institute of America (GIA), Sotheby’s said Monday.
Initially called the Incomparable Diamond, the stone was recut from its original 407-carat shield shape to deepen the color and brighten the hue, and renamed the Golden Canary. As the highlight of the December 7 Magnificent Jewels sale, it will be offered without reserve, with bidding starting at $1, Sotheby’s noted.
The Golden Canary was first discovered in the early 1980s in a pile of rubble by a young girl playing in the backyard of her uncle’s house, Sotheby’s noted. Miners from the nearby Miba diamond deposit had considered the stone to be too bulky to be diamond bearing and had discarded it. The girl gave the 890-carat rough to her uncle, who sold it to local diamond dealers. The diamond has since been displayed in multiple museums.
“The demand and appetite for [extraordinary colored diamonds] continues to grow,” said Quig Bruning, head of jewelry for Sotheby’s Americas. “Steeped in history, the Golden Canary is one of the most exquisite diamonds to ever be discovered, not only for its sheer size and intensity in color, but for its stunning beauty that is sure to captivate collectors around the world.”
Sotheby’s will showcase the diamond on a world tour prior to the auction, with stops in cities including Dubai; Taipei, Taiwan; Geneva; and Hong Kong.
By the end of summer 2021, park guests had found 255 diamonds, including four weighing over one carat. Autumn kicked off with a big surprise for one California couple, when Noreen Wredberg and her husband, of Granite Bay, visited the Crater of Diamonds for the first time.
Wredberg was walking on the north side of a central pathway through the search area on September 23 when she spotted something sparkling on top of the ground. Her find turned out to be the largest of the year, a 4.38-carat diamond about the size of a jellybean, with a pear shape and a lemonade yellow color. Wredberg named her gem after her husband’s kitten, calling it Lucy’s Diamond.
The three most common colors of diamonds found at the Crater are white, brown, and yellow. 248 diamonds registered last year were white (weighing 28.6 carats), 54 were brown (16.67 carats), and 52 were yellow (17.02 carats). Interestingly, all nine of the largest diamonds found last year were yellow or brown in color.
By the end of summer 2021, park guests had found 255 diamonds, including four weighing over one carat. Autumn kicked off with a big surprise for one California couple, when Noreen Wredberg and her husband, of Granite Bay, visited the Crater of Diamonds for the first time.
Wredberg was walking on the north side of a central pathway through the search area on September 23 when she spotted something sparkling on top of the ground. Her find turned out to be the largest of the year, a 4.38-carat diamond about the size of a jellybean, with a pear shape and a lemonade yellow color. Wredberg named her gem after her husband’s kitten, calling it Lucy’s Diamond.
The three most common colors of diamonds found at the Crater are white, brown, and yellow. 248 diamonds registered last year were white (weighing 28.6 carats), 54 were brown (16.67 carats), and 52 were yellow (17.02 carats). Interestingly, all nine of the largest diamonds found last year were yellow or brown in color.
Sotheby’s will offer a fancy-vivid-yellow diamond ring at its New York sale next month, estimating the piece could fetch up to $3 million.
The cut-cornered square step-cut, 73.11-carat, VS2-clarity jewel by Mayfair designer Glenn Spiro, called The Sienna Star, is one of the largest fancy-vivid-yellow diamonds to come to auction, Sotheby’s said Wednesday. The piece is one of the top items at the June 9 Magnificent Jewels sale. The auction will feature jewelry for the “Roaring Twenties 2.0” as people return to the social scene following long lockdowns, Sotheby’s noted.
A private collection of six jewels with a combined estimate of more than $13 million are another headline lot at the New York sale. Those include a necklace by Andrew Clunn, set with 28 oval-shaped diamonds totaling over 168 carats, which carries a high estimate of $3 million, and an emerald-cut, 23.59-carat, D-color, internally flawless, type IIa diamond ring with an upper valuation of $2.8 million.
A Colombian emerald and diamond garland necklace by Harry Winston, estimated at up to $2.5 million, and a 13.02-carat Burmese ruby ring, mounted by Carvin French, with a $2 million high valuation, are also part of the collection. Proceeds from the sale of those six items will be donated to charity.
Additionally, Sotheby’s will showcase a Bulgari ring with a 25.29-carat Kashmir sapphire flanked by diamonds, which it expects will bring in up to $3 million. Meanwhile, a modified square brilliant-cut, 3.75-carat, fancy-intense-pink, VVS1-clarity diamond ring, accented by triangle-shaped and round diamonds, is estimated to fetch up to $2.5 million.
The auction house will present jewels from the collection of philanthropist Margaret Jonsson Rogers, the daughter of Texas Instruments founder and Dallas mayor J. Erik Jonsson, as well as property from the estate of Mary Ethel Weinmann, the daughter of Count and Countess André de Limur, it added.
Sotheby’s will offer a fancy-vivid-yellow diamond ring at its New York sale next month, estimating the piece could fetch up to $3 million.
The cut-cornered square step-cut, 73.11-carat, VS2-clarity jewel by Mayfair designer Glenn Spiro, called The Sienna Star, is one of the largest fancy-vivid-yellow diamonds to come to auction, Sotheby’s said Wednesday. The piece is one of the top items at the June 9 Magnificent Jewels sale. The auction will feature jewelry for the “Roaring Twenties 2.0” as people return to the social scene following long lockdowns, Sotheby’s noted.
A private collection of six jewels with a combined estimate of more than $13 million are another headline lot at the New York sale. Those include a necklace by Andrew Clunn, set with 28 oval-shaped diamonds totaling over 168 carats, which carries a high estimate of $3 million, and an emerald-cut, 23.59-carat, D-color, internally flawless, type IIa diamond ring with an upper valuation of $2.8 million.
A Colombian emerald and diamond garland necklace by Harry Winston, estimated at up to $2.5 million, and a 13.02-carat Burmese ruby ring, mounted by Carvin French, with a $2 million high valuation, are also part of the collection. Proceeds from the sale of those six items will be donated to charity.
Additionally, Sotheby’s will showcase a Bulgari ring with a 25.29-carat Kashmir sapphire flanked by diamonds, which it expects will bring in up to $3 million. Meanwhile, a modified square brilliant-cut, 3.75-carat, fancy-intense-pink, VVS1-clarity diamond ring, accented by triangle-shaped and round diamonds, is estimated to fetch up to $2.5 million.
The auction house will present jewels from the collection of philanthropist Margaret Jonsson Rogers, the daughter of Texas Instruments founder and Dallas mayor J. Erik Jonsson, as well as property from the estate of Mary Ethel Weinmann, the daughter of Count and Countess André de Limur, it added.
A rare 6.70-carat VS1 natural fancy deep yellow diamond from the famous Zimmi mine, in Sierra Leone, could fetch as much as $705,000 at auction.
Canary yellow diamonds from Zimmi can command double the price of other fancy yellows because of their uniquely high color saturation levels. Yellow Zimmi stones over five carats are extremely rare.
This gem will lead the Tiancheng International Jewellery and Jadeite Autumn Auction 2020 in Hong Kong on 28 November.
Also at the sale is a pair of Zimmi natural fancy deep yellow diamond earrings 3.03 carat and 3.01 carat with an estimate of up to $320,000.
The Zimmi mine is in the heart of the rainforest region of Sierra Leone where the Mano river marks the border with Liberia.
Yellow diamonds occur when a single nitrogen atom replaces a carbon atom, absorbing the violet and blue light.
