Sotheby’s Geneva auction – Page 2 – The Diamond Certification Laboratory of Australia (DCLA)

De Beers Blue Diamond Fails to Sell at Sotheby’s

A blue diamond weighing 5.53 carats failed to find a buyer at Sotheby’s Geneva on Wednesday despite being billed as the star of the auction.

The cushion brilliant-cut, fancy-vivid-blue diamond is part of an eight-piece group called the De Beers Exceptional Blue Collection, which Sotheby’s has spread between its various Magnificent Jewels sales. No bids matched the stone’s threshold price for sale, according to a post-auction report by the Fancy Color Research Foundation (FCRF). The piece carried a presale estimate of $11 million to $15 million.

“The blue is an exceptional stone in every sense,” Sotheby’s told Rapaport News Thursday. “It attracted significant interest prior to yesterday’s sale. While we didn’t get to see it sell in the room last night, we are confident it will find a new home very soon.”

Meanwhile, a number of items set records at the November 9 sale, including a 20.16-carat sapphire and diamond ring from Cartier. That piece, which fetched $2.8 million against a high estimate of $2 million, saw a record price per carat for any blue sapphire of Burmese origin ever sold at auction. A 20.58-carat, pink sapphire ring also broke the record for per-carat price, bringing in $1.9 million, or $91,690 per carat, well above its $808,368 upper price tag. A pink sapphire and diamond brooch weighing 92.01 carats by Jean Schlumberger sold for $1.8 million, outstripping its $505,278 high estimate and setting a record price for a piece of jewelry by the designer.

Another notable item at the sale was a pair of unmounted oval-cut, D-flawless diamonds weighing 20.03 and 20.19 carats. The duo fetched $4.2 million, within estimates. A step-cut, 33.13-carat, D-color, VVS1-clarity diamond ring by Cartier brought in $2.9 million, also within its expected range.

The entire Geneva Magnificent Jewels auction garnered $50 million. Sotheby’s will offer two more blue diamonds from the De Beers collection at its upcoming New York Magnificent Jewels sale on December 7.

Source: Diamonds.net

303ct. Polished Yellow to Hit Auction Block 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.

Source: Diamonds.net

Two Diamonds over 100ct. to Lead Sotheby’s NY

Sotheby’s will offer two diamonds weighing more than 100 carats at its upcoming jewelry sale, with one expected to fetch in excess of $10 million.

The Juno diamond, a pear-shaped, 101.41-carat, D-color, internally flawless, type IIa stone, will lead the June 16 New York Magnificent Jewels sale, the auction house said last week. Only 11 D-color diamonds over 100 carats have ever been sold at auction, Sotheby’s noted.

That stone will be joined by the Earth Star, a pear-shaped, 111.59-carat, fancy-deep-orange-brown diamond, which has returned to the auction block for the first time in nearly 40 years. The piece, which is the second-largest diamond of its color, cut and size to be offered at an auction, carries a high estimate of $2.5 million.

the Earth Star diamond — *The Earth Star diamond*

Designer David Webb has created a custom mounting for the stone, which was fashioned from a 248-carat rough discovered at the Jagersfontein mine in South Africa in 1967. The setting uses azurmalachite to resemble the Earth as seen from the perspective of a star, Sotheby’s explained.

Other notable items include an emerald-cut, 26.06-carat, D-color, VVS1-clarity diamond ring by Kwiat, which is estimated at up to $3 million, and a pair of diamond and sapphire earrings. The set features two pear-shaped, D-flawless diamonds weighing 4.09 and 4.12 carats; two emerald-cut, D-color diamonds weighing 3.19 and 3.17 carats; and two Kashmir sapphires weighing 9.65 and 9.44 carats. It is predicted to realize up to $3 million. Meanwhile, an Indian-inspired emerald and diamond fringe necklace by Cartier made in 1945 has a price tag of $1.5 million to $2.5 million.

Source: Diamonds.net

De Beers Cullinan Blue Diamond Could Bring $48M at Auction

Sotheby’s will auction a stone described as “the largest vivid blue diamond ever to appear at auction” on April 27 in Hong Kong.

Sotheby’s estimates that it could bring $48 million.

The 15.1 carat step-cut blue was cut from a rough stone discovered in April 2021. It is “the largest internally flawless step cut vivid blue diamond that the Gemological Institute of America (GIA) has ever graded,” according to a press statement.

“This diamond ranks as one of the best De Beers has ever seen,” said Bruce Cleaver, CEO of De Beers Group. “It is extremely rare and unique, and as the Home of Diamonds, De Beers is pleased to join together with Sotheby’s to bring this diamond to the world.”

Only five blue diamonds over 10 carats have ever come to auction, Sotheby’s notes. Until now, none has exceeded 15 carats.

“Blue diamonds of any kind are rare on the market, but this is the rarest of the rare; nothing of remotely similar calibre has appeared at auction in recent years,” says Patti Wong, chairwoman of Sotheby’s Asia. “Hundreds of millions of years in the making, this extraordinary blue diamond is surely one of nature’s finest creations.”

The diamond comes from the Cullinan mine in South Africa.

Source: instoremag

A rare 100+ carat diamond sold for $12.3 million with cryptocurrency

*The 100+ carat diamond has sold for $12.3 million using cryptocurrency. Courtesy Sotheby’s*

The Key 10138, the rare pear-shaped diamond, that was auctioned at Sotheby’s on Friday, has been sold for $12.3 million using cryptocurrency. It was sold to an anonymous private collector.

At the time the auction was announced, the piece became the first time a diamond of such size had been offered for public purchase with cryptocurrency. Now it has now become the highest price achieved for any jewelry or gemstone bought with cryptocurrency.

“We are thrilled to witness a historical moment, when one of the Earth’s oldest and rarest treasures was purchased using humanity’s newest universal currency,” said Wenhao Yu, Deputy Chairman of Sotheby’s Jewellery in Asia, in a statement. “By introducing this innovative payment option to our luxury sale, we open up new possibilities and expand our reach into a whole new clientele, many of whom are from the digitally savvy generation. The result today not only attests to the resilient demand for top quality diamonds, but also reinforces Sotheby’s position as a pioneer in the luxury field.”

The 101.38 carat diamond from which it takes its name is the second largest pear-shaped diamond to appear on the public market and came from the world-leading diamond company Diacore, the auction house says.

The Key 10138 has achieved the highest gradings in both colour (D colour – the highest grade for a white diamond) and clarity (completely flawless, both internally and externally). It also belongs to the rare subgroup comprising less than 2% of all gem diamonds, known as Type IIa. Diamonds in this group are the most chemically pure type of diamond and often have exceptional optical transparency.

Source: thenationalnews

Cartier Bracelet Soars Past Estimate at Sotheby’s

Sothebys Geneva Saphhire and Diamond Bracelet

A sapphire and diamond bracelet fetched more than double its high estimate at Sotheby’s Geneva auction, selling to a female Asian collector after a bidding war.

The piece contains a 47.07-carat, royal-blue Burmese sapphire center stone with high clarity, cut in a cabochon shape and flanked by two pear-shaped white diamonds weighing 9.27 carats and 8.60 carats. Created by Cartier in 1927, the bracelet fetched $6.1 million against a high estimate of $3 million, and earned one of the highest prices at auction for an Art Deco bracelet.

In total, the Magnificent Jewels and Noble Jewels sale on Wednesday brought in $53.9 million, with 80% of lots sold, more than half of which exceeded their estimates.

“With its sensational ‘sugar loaf’ Burmese sapphire and powerful geometric design, the Cartier bracelet that led tonight’s sale was a true masterpiece, among the most important Art Deco pieces we’ve ever handled,” said David Bennett, worldwide chairman of Sotheby’s jewelry division.

The bracelet spearheaded a strong showing for Art Deco pieces, which achieved a combined $9.6 million at the sale, against a high estimate of $6 million, Sotheby’s noted.

A 6.03-carat, fancy-intense-purple-pink diamond pendant estimated at $2.5 million to $3.5 million garnered $3.4 million, while a diamond pendant weighing 78.29 carats went for $2.9 million, beating its $2.8 million high estimate.

A set of diamond jewels by Moussaieff, including a necklace, earrings and a bracelet, brought in $2.7 million. The collection was estimated at $2 million to $4 million.

Other notable items, many of which sold for well above their estimates, included a sapphire and diamond necklace set with a 14.97-carat Kashmir sapphire. The piece, dated 1890, fetched $1.4 million against its upper estimate of $800,000, while an emerald and diamond pendant-brooch combination, created by Cartier in 1927, garnered $1.1 million, smashing its $250,000 high estimate.

Meanwhile, Sotheby’s sold 93% of the jewels on offer from an Asian-American private collection, fetching a total of $12.7 million, against a high estimate of $8.9 million, the auction house said. The sale noted strong activity from Asian collectors, approximately half of whom were female buyers, more than double the number of women purchasers five years ago, Sotheby’s added.

Source: Diamonds.net