Update: Rare Petra Blue Diamond Sells For a World Record $9.5 Million

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 [...]

Petra Blue Diamond to be sold at the Sotheby’s Auction

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, [...]