Sotheby's says the spectacular diamond has the "highest price per carat estimate ever placed on any diamond or gemstone" to come to market Abigail Adams is a Human Interest Writer and Reporter for ...
A rare pink diamond has sold for HK$453.2 million (US$57.7 million) in Hong Kong, setting a record for price per carat paid at auction for any diamond or gemstone, according to Sotheby’s auction ...
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