The rare 7.o3 ct blue Petra diamond sold for a world record price of $9.5 million at Sotheby’s auction in Geneva, Switzerland on May 12th. Sotheby’s claims that this is the highest amount per carat that a gemstone has ever sold for at any auction . The bidding went back and forth between [...]
This ridiculously gorgeous 7.03 carat rare blue diamond, which was mined out of the South African Cullinan mine by Petra, is going to the Sotheby’s auction in Geneva, Switzerland on May 12th. The blue diamond was cut from a 26.58 carat stone and is scheduled for display at Hong Kong, Paris, New York, [...]