A gemological examination of chrysocolla in quartz from Tucson’s AGTA show.

Emerald from the Belmont and Montebello mines of Minas Gerais, Brazil seen at the GJX show in Tucson.

A discussion of the current demand for tsavorite and spinel in today’s market.

Rare material seen at the GJX show in February 2015.

Exceptional innovations using gem and mineral rough at Tucson’s GJX show.

A uniquely carved tourmaline suite on display in Tucson.

GIA’s Bangkok lab investigates the gemological properties of Moroccan amethyst.

An up-close look at the cultured pearl’s role in the gem and jewelry industry.

Prismatic blue and colorless dumortierite inclusions in rock crystal quartz are examined for the first time in the Carlsbad lab.

Exceptional stones are recirculated and new production is showcased at the AGTA show in Tucson.

Unique carvings in gems are displayed at GJX in Tucson.

At AGTA, exquisite jewelry pieces inspired by natural scenes were on view.

Color and size make a statement at this booth in Tucson.

Striking Tanzanian garnets showing color shifting at the Riverpark Inn (Pueblo) show in Tucson.