This is blue star sapphire is believed to be the largest one ever found and its owner showed it off to the press in the Sri Lankan city of Ratnapura. The proud owner of the gem has reportedly set an asking price of 300 million dollars for the precious stone, 3 times its initial valuation of 100 million.
Christie's New York Displays the Largest Flawless Fancy Vivid Blue Diamond Ever to Appear at Auction.
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