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 ...

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 ...

The largest rough diamond discovered since 1905, the 1,758-carat Sewelo, was revealed with great fanfare in April, named in July and then largely disappeared from view. Now, it has resurfaced with a ...

The Cullinan III and IV brooch has an estimated worth of between £50 and £180 million. Elizabeth inherited the diamonds from her grandmother, Queen Mary. Queen Elizabeth II wore her share of ...

Nothing says love like a diamond, especially a stunning blue diamond that's now up for auction. Feast your eyes on the largest flawless vivid blue diamond in the world. Weighing 13.22 carats, the ...