Today, the Grainger Hall of Gems is more stunning than ever. Our collection has grown to include more than 600 gemstones and 150 pieces of antique and contemporary jewelry. (Several pieces were ...

A colossal 2,492-carat raw diamond has been discovered in Botswana, possibly making it the second-largest gem-quality diamond ever found. The Canadian mining company Lucara Diamond Corp, which ...

Scientists are getting close to making perfect white diamonds on demand. New techniques are allowing companies to make diamonds in a laboratory -- diamonds pure enough and large enough for an ...

A 2,492-carat raw diamond discovered in Botswana is believed to be the world’s second-largest, behind only the famed Cullinan diamond. A 2,492-carat raw diamond discovered in Botswana is believed to ...