A mysterious black diamond stumped experts for years until one Belgian cutter invented a new machine to shape the 612-carat ...

A 170-carat pink diamond discovered in Angola may be the largest such gemstone found in 300 years, according to Australian miner Lucapa Diamond Company. Named the "Lulo Rose," the diamond was found at ...

MURFREESBORO, Ark. (KARK) – Officials at Crater of Diamonds State Park announced that a family from Cookson, Oklahoma, discovered a nearly 3-carat brown diamond during their visit. Raynae Madison and ...

The world's second largest diamond could soon find a new home in a museum or a sheikh's collection -- but first needs to be properly evaluated, the Belgian firm holding it told AFP Monday. Unearthed ...

A Florida couple finds a 3.36-carat diamond in Arkansas, a discovery that reignites interest in the only public park ...