The 555.55 carat black diamond has ... the gem would be renamed the "HEX.com diamond", in reference to the blockchain platform he founded. The gem is a carbonado, which is one of the toughest ...
The 555.55 carat black diamond has belonged ... online bidding closes next week. The gem is a carbonado, one of the toughest forms of natural diamond. Black diamonds are usually about 2.6 to ...
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