Bulgari's Blue Diamond Trombino' Ring Sets New World Record at Bonham's London Sale

Bonhams Takes World Record of £6.2 Million 

For Exceptional Blue Diamond

Bonhams reports a new record was set at their Fine Jewelry sale in London's New Bond Street,  April 24th. The exceptional stone? a rare fancy deep-blue diamond weighing 5.30 carats which sold for a record $1.8 mil per carat.

The previous world record price per carat for a blue diamond was $1.68 mil. This rare gem was bought by Graff Diamonds, the international diamond house headquartered in New Bond Street. London. Bidding came from round the world via 25 telephone lines as well as bidders in the packed saleroom.

The fancy deep-blue diamond is set in a 'Trombino' ring made by Bulgari, the renowned Italian jeweler favored by Hollywood film stars, and the epitome of fashion and innovation during the 1960s. The ring was made circa 1965 and sold for close to four times the estimate of just over £1,000,000 per carat by Bonhams.

Jean Ghika, Director of Bonhams Jewelry Department for Europe commented after the sale: "We are delighted with the price it has made. It was a sensational stone which charmed everyone who viewed it prior to the sale. Blue diamonds, especially those over 5.00 carats, are extremely rare to see on the market and continue to be highly sought-after. We are honored to have handled the sale of such a unique gem."

Blue diamonds are very rarely seen on the market and fancy-coloured diamonds are among the most valuable and sought-after in the world. They have delighted royals and celebrities over the centuries, with the most famous blue 'Hope Diamond' bought by King Louis XIV of France in the late 17th Century. The stunning 45.52-carat diamond, originating from India was eventually stolen from the Crown Jewels by thieves in the French Revolution and then smuggled to London, finally coming to rest in the Smithsonian Natural History Museum in Washington, D.C.

The Bulgari ring features a cushion-shaped fancy deep-blue diamond, weighing 5.30 carats. It is set horizontally within a mount pavé-set with brilliant-cut diamonds and courses of baguette-cut diamonds.

The term "fancy" is used to describe a diamond of intense color and the color "fancy deep-blue" is one of the rarest. The extraordinary color blue is derived from small atoms of boron mixing with the carbon atoms in a diamond, affecting the absorption of light passing through the stone and lending it a blue appearance. Blue diamonds are structurally very pure and account for less than one per cent of all diamonds mined.

Bonhams, founded in 1793, is one of the world's largest auctioneers of fine art and antiques. The present company was formed by the merger in November 2001 of Bonhams & Brooks and Phillips Son & Neale. In August 2002, the company acquired Butterfields, the principal firm of auctioneers on the West Coast of America. Today, Bonhams offers more sales than any of its rivals, through two major salerooms in London: New Bond Street and Knightsbridge; and a further three in the UK regions and Scotland. Sales are also held in San Francisco, Los Angeles, Carmel, New York and Connecticut in the USA; and Germany, France, Monaco, Hong Kong and Australia. Bonhams has a worldwide network of offices and regional representatives in 25 countries offering sales advice and valuation services in 60 specialist areas. 
For a full listing of upcoming sales go to www.bonhams.com

Rare, natural blue diamond to be auctioned during Israel's Int'l Diamond Week

Rare, natural blue diamond to be auctioned by Tzoffey's 1818

during U.S. / International Diamond Week in Israel

A natural vivid blue unique heart shape diamond, weighing 1.93 carat, is one of the show pieces at the auction of exclusive gems and jewelry organized by Tzoffey's 1818 to be held during the inaugural US/International Diamond Week at the Israel Diamond Exchange (IDE), March 17-20. When sold, the stone may fetch more than a million dollars per carat.

"Natural blue diamonds are without doubt the most rare and therefore most expensive category among natural color diamonds," said Avner Sofiov, owner of the French-Israeli auction house Tzoffey's. He recalled that the last two blue diamonds that were sold at auction by Sotheby's fetched extraordinary prices. "In May 2012, a marquise-shaped blue diamond of 2.07 carat was sold for $1.85 milllion, and in November a briolet-cut stone of 10.48 carat sold for more than $1 million per carat. The quality of this 1.93 heart shape is higher than the stones sold by Sotheby's and I am very curious how much this stone will fetch!" he added.

The blue diamond, together with hundreds of other, high-quality gemstones and jewelry pieces, can be viewed in a special viewing area adjacent to the trading hall of the Israel Diamond Exchange, from March 17 to 20. Bids are to be submitted in closed envelopes. The exact time of the auction's conclusion and its results will be announced shortly.

In addition to the Tzoffey's auction, I Hennig/ Fusion Alternatives, and the Rapaport Company will hold two auctions of polished diamonds. These polished auctions are being held in addition to rough diamond tenders organized by I Hennig/Fusion Alternatives and Ediamond.

Buyers will be offered four free hotel nights at the Leonardo Hotel, located opposite the Ramat Gan diamond exchange complex. The complimentary hotel accommodation is being provided courtesy of the Israel Diamond Institute (IDI). Please click here to register for the event.