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 ...

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 ...

Today, most people admire diamonds for two exceptional attributes: their hardness and their brilliance. Scholars knew of diamonds' unrivaled hardness since antiquity, but its unique optical properties ...

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 ...

It's proposal season, and engagements are on the rise. So are factory-made diamond sales.Not that you'd know the difference. Man-made diamonds look the same as naturally occurring ones. The only ...