Todd Wacks exhibits his exceptional graduated suite of 65 matched color-change pyrope garnets from Morogoro, Tanzania.

A cluster of needle inclusions in a pyrope-almandine garnet is reminiscent of a comet’s tail.

A variety of colors and effects were observed in “gold sheen” sapphire from eastern Kenya.

A natural nacreous pearl from the Mytiloidea superfamily displays a visual effect suggestive of a meteor shower.

An update on the global pearl market from vendors at the Tucson gem shows.

Calcitic crystals on the surface of a pen pearl display a play-of-color phenomenon under fiber-optic illumination.

Patterns observed in a color-treated purple diamond reveal details about its growth history.

Jewelry designer Samira Mazloom draws awareness to endangered species with her unique “Fading Footprints” collection.

Examination of a natural pearl reveals a cavity formation with thread-like filaments.

Eleux Jewelry offers unique pieces pairing hardstones such as agate and turquoise with diamonds and other precious gems.

A vivid orangy yellow rough diamond displaying penetration twinning is examined in the Carlsbad laboratory.

A graduate of GIA’s Jewelry Design program in Carlsbad, California, is the recipient of the 2025 Gianmaria Buccellati Foundation Award.

An unusually high abundance of magnetite in four distinctive crystal habits is observed in a Zambian emerald.

Microscopic examination of quartz reveals well-formed blue hexagonal prismatic crystals exhibiting moderate pleochroism.

Striking red cinnabar inclusions are observed in a quartz specimen from China.

GIA’s Bangkok laboratory reports on a study of rough and cut chrysoprase from a newly discovered deposit in Western Australia.

An imitation is identified in a parcel of non-nacreous pearls submitted to the Mumbai laboratory.

Global retailer VGL offers ethically sourced jewelry while partnering with hunger-relief organizations to provide meals for children.

Particle clouds with an interlocking triangular pattern are revealed in a blue sapphire from Sri Lanka.

A common opal from Ethiopia examined in the New York laboratory bears a striking resemblance to a bar of chocolate.