Diamonds are eternal but their assembly within a jewel may change. The same gem can therefore be the star lot of two auctions a few years apart with a different surrounding.
The GIA report numbered 2125017707, dated 8 June 2010, applied to a Type IIb diamond weighing 8.01 carat, guaranteeing its natural, Fancy Vivid Blue color and VVS1 clarity.
This gem is close to the best, in the most prestigious color and a clarity which is second only to Internally Flawless. Fancy vivid blue diamonds rarely exceed that weight. It was sold for HK$ 100M including premium by Sotheby's on 3 April 2012.
I commented it as follows at that time :
"The emerald cut is the most prestigious for colored diamonds. It guarantees the natural qualities of the diamond and does not alter the color.
"Sotheby's sells an emerald cut fancy vivid blue mounted on a platinum ring between two small white diamonds. The press release indicates that this is the largest fancy vivid blue in emerald cut to appear at auction for many years."
Now identified as the Sky Blue Diamond, it is more accurately described as square cut which better stresses its great shape achievement, and assembled on a more exuberant Cartier ring set with brilliant cut and baguette diamonds.
It is estimated CHF 14.76M worth US $ 15M for sale by Sotheby's in Geneva on November 16, lot 337. Please watch the video shared by WSJ.
SOLD for CHF 17M including premium
The GIA report numbered 2125017707, dated 8 June 2010, applied to a Type IIb diamond weighing 8.01 carat, guaranteeing its natural, Fancy Vivid Blue color and VVS1 clarity.
This gem is close to the best, in the most prestigious color and a clarity which is second only to Internally Flawless. Fancy vivid blue diamonds rarely exceed that weight. It was sold for HK$ 100M including premium by Sotheby's on 3 April 2012.
I commented it as follows at that time :
"The emerald cut is the most prestigious for colored diamonds. It guarantees the natural qualities of the diamond and does not alter the color.
"Sotheby's sells an emerald cut fancy vivid blue mounted on a platinum ring between two small white diamonds. The press release indicates that this is the largest fancy vivid blue in emerald cut to appear at auction for many years."
Now identified as the Sky Blue Diamond, it is more accurately described as square cut which better stresses its great shape achievement, and assembled on a more exuberant Cartier ring set with brilliant cut and baguette diamonds.
It is estimated CHF 14.76M worth US $ 15M for sale by Sotheby's in Geneva on November 16, lot 337. Please watch the video shared by WSJ.
SOLD for CHF 17M including premium
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