Set with a radiant-cut Fancy Light Gray Blue diamond weighing 1.32 carats and a cushion-cut Fancy Light Purplish Pink diamond weighing 1.63 carats, framed and accented by small round diamonds of pink hue and small round near colorless diamonds, together weighing .89 carat

Simply set with a pear-shaped diamond of fancy blue colour weighing approximately 3.60 carats, flanked by baguette diamonds, mounted in 14 karat white gold.

Centring on a brilliant-cut fancy vivid blue diamond weighing 7.59 carats, surrounded by brilliant-cut pink diamonds together weighing approximately 1.70 carats, to shoulders set with brilliant-cut diamonds, mounted in platinum.

Centring on a cushion-shaped fancy vivid blue diamond weighing 2.05 carats, embedded in a carved oval rock crystal, bordered by brilliant-cut diamonds extending to the shank, mounted in 18 karat white gold.

Centring on a cushion-shaped fancy vivid blue diamond weighing 2.05 carats, embedded in a carved oval rock crystal, bordered by brilliant-cut diamonds extending to the shank, mounted in 18 karat white gold.

Set with a fancy vivid green-blue cut-cornered rectangular mixed cut diamond weighing 2.68 carats, between trapeze diamond shoulders, mounted in platinum.

Centring on a heart-shaped fancy blue diamond weighing 7.02 carats, flanked by marquise- and pear-shaped blue diamonds, to a stylized mount set with brilliant- and circular-cut pink diamonds, the blue and pink diamonds together weighing approximately 3.60 carats, mounted in 18 karat pink gold.

The pear-shaped Fancy Blue diamond weighing 9.15 carats, mounted in platinum.

Set with a pear-shaped diamond of fancy intense blue color weighing 1.31 carats, and a pear-shaped diamond of fancy light pink color weighing 1.34 carats, mounted in 18 karat gold.

Set with a marquise-shaped fancy dark grey-blue diamond weighing 3.19 carats, flanked by two trilliant diamonds, further embellished with brilliant-cut diamonds, the diamonds together weighing approximately 1.80 carats, mounted in platinum.

Set with an oval fancy deep blue diamond weighing 2.01 carats, amid a bombé frame pavé-set with brilliant-cut diamonds extending to the shank, mounted in platinum.

Set with a fancy deep blue pear-shaped diamond weighing 3.11 carats, surmounted by a pear-shaped diamond, on a fine chain, mounted in platinum.

Set with a fancy deep greyish blue pear-shaped diamond weighing 2.89 carats and a colourless pear-shaped diamond weighing 2.34 carats, the shank set with rose, single and circular-cut stones, mounted in platinum.

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 an emerald-cut fancy vivid blue diamond weighing 3.32 carats, flanked by two trilliant-cut diamonds together weighing approximately 2.00 carats, mounted in 18 karat white gold.

Centering an emerald-cut Fancy Grayish Blue diamond weighing 3.02 carats, the mounting accented by baguette, single, old mine and triangle-cut diamonds weighing approximately .30 carat, circa 1930.

Of cross over design, set with a fancy vivid blue pear-shaped diamond weighing 5.02 carats and a pear-shaped diamond weighing 5.42 carats, to a platinum mount.

The fancy vivid blue modified rectangular brilliant-cut diamond weighing 7.03 carats, on a plain platinum mount. Illustrated unmounted.

The radiant-cut fancy intense blue diamond weighing 5.02 carats, set within a border of circular-cut pink diamonds, similarly accented to the shoulders, mounted in 18 karat pink and white gold.

Set with a fancy intense blue pear modified brilliant-cut diamond weighing 10.09 carats, between similarly cut fancy light pink diamonds weighing 1.02 and 1.00 carats respectively, mounted in platinum and 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.

The pendant set with a pear-shaped diamond of fancy intense blue color weighing 2.59 carats, surmounted by a marquise-shaped diamond weighing .92 carat, and a round diamond approximately .10 carat, completed by a platinum, link chain.

The magnificent pear-shaped Fancy Vivid Blue, Internally Flawless diamond weighing 5.35 carats matched with a pear-shaped D color, Internally Flawless diamond of 5.42 carats.

The cushion-shaped fancy intense blue diamond weighing 3.16 carats, set between tapered baguette diamonds.

Set with a fancy vivid blue pear-shaped diamond weighing 4.16 carats, framed by brilliant-cut diamonds of pink tint, the hoop pavé-set with similar brilliant-cut stones, mounted in platinum and yellow gold.

Set with a heart-shaped fancy vivid blue diamond weighing 3.47 carats, mounted in platinum.

‘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

Exceptionally rare, a matched pair of heart-shaped Fancy Vivid Blue diamonds is set in platinum and surrounded by round brilliant white diamonds. Blue diamonds, carat total weight 3.84, clarity grades VVS1 and VS2; white diamonds, carat total weight .66. 

Set at the centre with a fancy deep blue marquise-shaped diamond weighing 2.07 carats, between heart-shaped diamond shoulders.

Set with a cushion-shaped Fancy Light Purplish Pink diamond weighing 1.00 carat and a cushion-shaped Very Light Blue diamond weighing 2.01 carats, decorated by variously-shaped diamonds together weighing approximately 1.40 carats, mounted in 18 karat white and pink gold.

Bulgari Blue. This 10.95 carat, triangular-shaped, Fancy Vivid blue diamond is set with a 9.87 carat, G color diamond on a vintage gold ring. It sold for $15.8 million on Oct. 20, 2010 at Christie’s in New York. Photo courtesy of Christie’s Images LTD 2013.