Hollywood jeweler Jack Armstrong is putting a 733-carat jewel, the Black Star of Queensland sapphire, on the market -- but he's not willing to let go of it if he doesn't get his price.

LOS ANGELES (CN) - A man who says he is co-owner of the largest sapphire in the world, the 733-carat Black Star of Queensland, says Harry Winston jewelers and its vice president Goli Parstabar blew a ...

Add articles to your saved list and come back to them any time. Buyers with a spare $100 million are being sought for the Black Star of Queensland, a 733 karat sapphire. The gem is up for private ...

When Harry Spencer, a sapphire miner, first saw the black rock his young son Roy brought to their home in Queensland, Australia in the 1930s he is said to have remarked – “Oh yes, a large ...