most expensive
Behold the World’s Largest Blue Star Sapphire
A Sri Lankan gem trader is selling the world’s largest blue star sapphire.
The egg-shape stone weighs 1,404.49 cts...
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’...
Most Valuable Diamond Ever? A 12.03 Carat Fancy Vivid Blue Goes Up for Auction
On Nov. 11 in Geneva, Sotheby’s will auction the Blue Moon, a 12.03 ct. internally flawless vivid blue estimat...
Superstar! The Holy Grail of Watches Scores $24 Million, New World Record
They don’t call it super for nothing.
The Henry Graves Jr. Supercomplication, dubbed the “world’s most...