A rare look at a smoke ring pattern identified in sapphire without the presence of beryllium.

Fiber-optic light reveals a remarkable set of stellate inclusions in blue-green Paraíba tourmaline.

A study of a special quartz known in the Chinese trade as “Auralite 23.”

An extremely rare natural-color red diamond is submitted to the Carlsbad laboratory.

GIA’s Tokyo laboratory examines a Brazilian emerald with a gota de aceite–like effect characteristic of Colombian emeralds.

An examination of the first natural pearl reportedly discovered in a Telescopium species.

A stunning large Kashmir star sapphire, set in a combination ring and pendant, is submitted to the New York laboratory.

The New York laboratory identifies a sample submitted for a colored diamond identification and origin report as synthetic moissanite.

Examination of a Fancy yellow-green diamond attributes color to both natural and artificial mechanisms.

The Carlsbad laboratory reports on two CVD-grown diamonds subjected to multiple treatments to achieve their final color grades.

A partially enclosed orange rutile crystal is observed on the crown of a faceted diamond.

Numerous inclusions are observed in a parallel cluster of two quartz crystals from Minas de Panasqueira in Portugal.

Ahmadjan Abduriyim receives 2021 JAMS award for his contributions to applied mineralogy.

GIA’s Bangkok laboratory examines five “box bead” cultured pearls with nuclei fashioned from saltwater shell.

Additional scientific details are provided to better understand orange luminescence in sapphire.