"Mandarin garnet" specimens are the most in demand and the most expensive. Spessartine gem quality stones are rarely larger ...

The current record for the most expensive diamond or any gemstone sold at auction is held by the CTF Pink Star, a 59.60-carat oval mixed-cut diamond auctioned at Sotheby’s Hong Kong in April ...

Diamonds have long been a symbol of wealth, power and prestige. Some of the most exquisite diamonds in history have fetched record-breaking prices at auction, often ending up in the hands of royals, ...

The most expensive diamond ever sold per carat until now was the Oppenheimer Blue diamond, which sold at a hammer price of $51.3 million and came in at 14.62 carats, or $3.5 million per carat ...

At $3.3 million per carat, it is the most expensive per carat price placed on any diamond or gemstone prior to its sale. The Eternal Pink, discovered four years ago by De Beers in a South African ...

Diamonds have long been a symbol of wealth, power and prestige. Some of the most exquisite diamonds in history have fetched record-breaking prices at auction, often ending up in the hands of ...