Explores the geology, production, and yield of the world’s most commercially important ruby deposit.

An introduction to Moroccan amethyst, which features distinctive color zoning and inclusions.

Guided by their cultural heritage and powered by a rapidly growing domestic consumer market, Chinese designers are exerting a powerful influence on the global stage.

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

Unique carvings in gems are displayed at GJX in Tucson.

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

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

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

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

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

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

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.

Some unusual gem material featured at the GJX show in Tucson.

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

Rare material seen at the GJX show in February 2015.

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