blue
15-Carat Fancy Vivid Blue Diamond Sells for $57.5M
Hong Kong—The “De Beers Cullinan Blue Diamond” is off the market.
In a single-lot sale at Sotheby’s Hong Kong o...
Check Out the 118-Carat Blue Sapphire Heading to Auction
OCTOBER 1, 2020
Hong Kong—A special blue sapphire from the “mythical world” of 100-carat-plus gems will head to th...
De Beers Millennium Jewel Sells for $32 Million
On April 5, Sotheby’s Hong Kong garnered $31.8 million for the De Beers Millennium Jewel 4 (pictured, right), a ...
The Story Behind the New Gemstone: Aquaprase
The gem that stumped even a noted gem lab is all new and all natural
Two years ago, veteran gem explorer Yianni ...
This 12 Carat Blue Is Now the Most Expensive Diamond Ever Sold at Auction
The Blue Moon, a 12.03 ct. internally flawless vivid blue cushion cut, fetched $48.5 million at the Sotheby’...
122 Carat Blue Fetches $27 Million, Doesn’t Set Record
That price works out to a $225,269 a carat.
Petra Diamonds, which found the gem at its Cullinan mine in South A...
Blue diamond sets world auction record
London--A 5.30-carat fancy deep-blue diamond set a world auction record for price per carat when it sold for approxim...