Blue Diamond Sold article first appeared in the Gem Cutter's Guild of Baltimore June 09 Newsletter.
by Carolyn Weinberger
Imagine owning a seven-carat blue diamond! At an auction held May 13
by Sotheby’s in Geneva, the fabulous stone, set in a platinum ring, was sold to an anonymous buyer for a record almost $9.5 million. That’s more than $1 million per carat! The new owner will have the right to name the stone.
The stone, mined from the famous Cullinan Mine in South Africa is listed as an internally flawless, fancy vivid blue weighing in at 7.03 carats. It was cut from a 26.58 carat rough stone found in 2008. The blue color is caused by a sprinkling of boron. The cut stone is about the size of a US dime. The Cullinan Mine has long been known as the source of many famous diamonds including the famed Cullinan which was discovered there in 1905. It weighed in at 3,106 carats
and remains the largest diamond ever found. Two gems were cut from it - the Great Star of Africa and the Lesser Star of Africa, now both in the British crown jewels.
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