Over the last decade, the production methods used to create synthetic diamond melee have improved substantially, along with the quality of the specimens themselves.

Crassostrea virginica, the so-called Eastern or American oyster, is a commercial seafood widely distributed along the east coast of the United States to the Gulf of Mexico.

Irradiated CVD-grown diamonds are examined in the Carlsbad lab.

An unusual assembled stone is examined at GIA’s New York lab.

Rare pearls, along with their shell, are studied in the Hong Kong lab.

A look at the color zoning exhibited by the largest HPHT-treated blue diamond graded by GIA.