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

Rare material seen at the GJX show in February 2015.

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

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

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

Unique carvings in gems are displayed at GJX in Tucson.

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

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

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

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

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

A purple non-nacreous specimen is revealed to be a natural northern quahog pearl.

A Fancy black round brilliant diamond has an inclusion that is revealed to be a natural diamond crystal.

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

The New York lab discovers a synthetic melee diamond in a pendant, underscoring the importance of testing for undisclosed synthetics.

Examination of the largest HPHT synthetic diamonds GIA has examined so far demonstrated significant progress in this growth technology.

Beautifully cut spinel and aquamarine was among the finds at Tucson’s GJX show.

Insight into the markets for ruby, sapphire, emerald, and other colored gems.

Garnets and a wide variety of tanzanite at the Tucson gem shows.

A unique assortment of colored gemstones as seen at the GJX show in Tucson.