An Art Deco aquamarine and diamond necklace by Cartier, dated circa 1940, sold for £459,062 (approx. $601,399) including premium, at Bonhams' London Jewels sale, tripling its pre-sale estimate of £100,000 - 150,000 (est. high of $197,440). The auction house says that the highly articulated geometric necklace, set with nearly 170 carats of beautifully matched aquamarines, was an impeccable example of Cartier's late Art Deco style and sparked an international bidding war.
A Fancy Pink diamond weighing 5.03 carats, VS1 clarity, sold for more than $2.9 million, or $583,551 per carat at Bonhams London Fine Jewelry sale last week (26 September), setting a new auction world record for a Fancy Pink diamond per carat. The previous auction record for a Fancy Pink diamond held by Sotheby's Geneva, May 2016, was $528,021 per carat.
A Fancy Intense Blue diamond which has been held in a private collection for nearly 30 years sold for $3.6 million (£2,685,000), smashing its $2 million high estimate, at Bonhams Fine Jewellery sale in London on September 20. The 4.03-carat pear-shaped diamond, "became the subject of a fierce bidding frenzy before it finally went under the hammer, selling to Graff Diamonds for $853,203 price per carat," the auction house writes.
Magnificent diamonds, Kashmir sapphires, Colombian emeralds and signed jewelry all feature in Bonhams New York Fine Jewelry sale this September with 180 lots set to go under the hammer. "A Superb Diamond Ring" will be leading the sale. The 16.90 carats step-cut diamond is set with round brilliant-cut diamond shoulders and is estimated at $1,600,000-2,200,000. The diamond is certified as D color, Internally Flawless and classified as Type IIa, meaning that it has been recognized as the most chemically pure and with exceptional optical transparency.
Estimated at £1,200,000 - 1,500,000 ($1.5 - 1.9 million), a Fancy Intense Blue diamond will headline Bonhams London Fine Jewelry sale on September 20. The auction house states that the pear-shape diamond, weighing 4.03 carats, has been in a UK private collection for over 30 years. According to the GIA, only one in 10,000 diamonds has a fancy color, which makes such stones rare and highly sought after.
Period and designer jewelry has outperformed the housing market over the past decade, according to new figures, writes Bonhams auction house in a press release. Research reveals the most rare and sought-after pieces of vintage jewelry have soared in value by over 80% during the past ten years. By contrast, average house prices in England have risen in value by just 47% over the same period of time, according to ONS figures. Art Deco (1920s and 1930s) and Belle Epoque jewelry (1890 to 1915) has soared by a remarkable 88% since 2006.
Auctioneer Bonhams has sold a rare oval-cut blue diamond weighing 3.81 carats for £2,322,500 ($3 million, or $792,450 per carat). The Fancy Intense blue diamond comes from a private British collection. Jean Ghika, Head of Jewellery for Bonhams UK & Europe, said: “Blue diamonds account for only 0.004% of all diamonds mined and are therefore exceptionally rare and remain highly sought after. The price achieved in today’s auction demonstrates that the global appetite for colored diamonds remains as buoyant as ever.”
A pair of Kashmir sapphires and a rare blue diamond are set to be the highlights of a Bonhams London sale as it starts the fall auction season with its Fine Jewellery auction on September 20. Headlining the sale is a oval-cut blue diamond weighing 3.81 carats. The Fancy Intense Blue diamond is accompanied by a GIA report and hails from a private British collection. Jean Ghika, Head of Jewellery for Bonhams UK & Europe, says: “Blue diamonds are extraordinarily rare and account for only 0.004% of all diamonds mined.
Prices for fancy colored diamonds, especially blue diamonds, continue to climb. Just 30% of all mined diamonds are gem-quality and only 0.04% of diamonds mined are blue "and finding them is random. As a result of their incredible rarity and scarcity, they are fetching record prices," said auctions house, Bonhams London, Department Director Emily Barber. The auctioneer said it made jewelry auction history in 2015, setting four new world records in its New Bond Street salesroom.
Bonhams’ London Fine Jewellery sale on December 5, featuring jewelry from celebrated designers including Cartier and Van Cleef & Arpels, along with a pair of exceptional Kashmir sapphires belonging to a European Princess set three new auction world records. The sales’ fancy greyish-blue, 2.97cts step-cut diamond, set in a ring designed by the society jeweller Andrew Grima, achieved £1,482,500 ($2,240,000) against its pre-sale estimate of £500,000-700,000. This set a new world record price per carat for a fancy greyish-blue diamond and a new world record for a Grima creation.
In the first ever TV advert by a major international auction house, Bonhams of London will be launching a TV ad campaign dedicated to jewelry later this month. Called Be Part of the Story, the commercials aim to drive brand awareness and encourage people to buy and sell their jewelry at Bonhams.
A rare British-owned gemstone steeped in history and intrigue sold for a record price of $30,000 per carat at Bonhams Fine Jewellery sale in London. The previous world record price per carat for a faceted Spinel was $16,000 which was set in 2013.
Daniel Struyf, who has been a jewelry specialist at Christie’s since March 2011, is now the international jewelry director at Bonhams, a newly created role. Struyf is a jewelry auction and industry veteran who is fluent in multiple languages and has worked in the three major jewelry hubs around the world - Christie's, diamond company Backes & Strauss in Antwerp and Olympic Diamond Corp.