Well-known auction house Christie's is going to sell the world's largest pure and heart-shaped diamond. 92-carat diamond will be auctioned on May 17 in Switzerland. Experts predict it could be sold for $ 20 million.
In their opinion, in the recent period not white, but colored diamonds are demanded. This explains the fact that experts set for a relatively low price for precious stone.
Overall, during that auction 250 precious stones will be on sale.

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