A 0.23 g orangy brown crystal, a 0.39 ct step-cut gem.

Twenty-two gem opals from a new volcanic deposit located near Bemia

This section, from the Summer 2012 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.

The proper use and limitations of IR spectroscopy for identifying natural versus synthetic amethyst of various types have been investigated, focusing on the region 3800–3000 cm-1.

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.

This section, from the Summer 2005 issue of Gems & Gemology, is a compilation of interesting finds from GIA's laboratories.

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.

This section, from the Summer 2006 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

Researchers treated 128 emeralds with nine emerald fillers.

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.

This section, from the Summer 2007 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.