
The Bulgari ‘Trombino’ ring auctioned at Bonhams in April, set with a cushion-shaped fancy deep-blue diamond weighing 5.30ct, realised £6.2 million, more than four times its high estimate. The extraordinarily rare, fancy deep-blue diamond ring by Bulgari sold to Graff Diamonds for a world recording-breaking price per carat of US$1.8 million.

Tiffany designers set a stunning greenish blue diamond at the center of this Art Deco-inspired ring. White diamonds in platinum create a mesmerizing frame. Rectangular modified brilliant Fancy Greenish Blue diamond, carat weight 1.20; square baguette white diamonds, carat total weight 2.09; round brilliant white diamonds, carat total weight .12.

Centring on a pear-shaped fancy intense blue diamond weighing 2.06 carats, flanked by a pear-shaped fancy pink and fancy purplish pink diamond weighing 0.21 and 0.20 carat respectively, framed by circular-cut pink diamonds, to shoulders set with brilliant-cut diamonds, mounted in platinum and 14 karat pink gold.

Claw-set with a fancy vivid blue cut-cornered rectangular modified brilliant-cut diamond weighing 4.16 carats, flanked by tapered baguette diamonds, mounted in platinum.

Each surmount designed as a cluster of three pear-shaped diamonds weighing 0.93, 1.07, 1.10, 1.10, 1.26 and 1.48 carats, suspending a brilliant-cut stone weighing 0.86 carat and a similarly cut fancy blue diamond weighing 0.85 carat, respectively suspending a fancy blue pear-shaped diamond weighing 5.01 carats and a similarly shaped stone weighing 5.61 carats, mounted in yellow gold.

Each surmount designed as a cluster of three pear-shaped diamonds weighing 0.93, 1.07, 1.10, 1.10, 1.26 and 1.48 carats, suspending a brilliant-cut stone weighing 0.86 carat and a similarly cut fancy blue diamond weighing 0.85 carat, respectively suspending a fancy blue pear-shaped diamond weighing 5.01 carats and a similarly shaped stone weighing 5.61 carats, mounted in yellow gold.

‘The Blue’ diamond, a 13.22ct Fancy Vivid blue pear-shaped diamond, is the largest flawless Fancy Vivid blue diamond in the world. It has been renamed ‘The Winston Blue’ by its new owner, Harry Winston. ‘The Winston Blue’ diamond set a new world auction record for the price per carat for a blue diamond at Christie’s Geneva. The star at Christie’s sale of Magnificent Jewels in Geneva on 14 May 2014 was the 13.22ct ‘The Blue’ diamond. It sold for close to $23.8 million, which is nearly $1,800 per carat – a new world record price per carat for a blue diamond.

‘The Blue’ diamond, a 13.22ct Fancy Vivid blue pear-shaped diamond, is the largest flawless Fancy Vivid blue diamond in the world. It has been renamed ‘The Winston Blue’ by its new owner, Harry Winston. ‘The Winston Blue’ diamond set a new world auction record for the price per carat for a blue diamond at Christie’s Geneva. The star at Christie’s sale of Magnificent Jewels in Geneva on 14 May 2014 was the 13.22ct ‘The Blue’ diamond. It sold for close to $23.8 million, which is nearly $1,800 per carat – a new world record price per carat for a blue diamond.

The intricate custom-designed setting for this exquisite Fancy Intense Blue diamond highlights the gem’s unparalleled beauty. Ring in platinum with a rectangular modified brilliant blue diamond framed by 26 curved baguette white diamonds. Blue diamond, carat weight 1.59; white diamonds, carat total weight 1.38
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