◂ BACK TO GEM ENCYCLOPEDIA
Tourmaline
Tourmalines have a variety of exciting colors with one of the widest color ranges of any gem.
See Gem As
Tools
Research
Spring 2010 Gem News International
Spring 2010 G&G Lab Notes
This section, from the Spring 2010 issue of Gems & Gemology, is a compilation of interesting finds from GIA's laboratories.
Spring 2011 Gem News International
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.
GIA's Gübelin Gem Project: Tourmaline
Tourmalines have a very complex chemical composition, and more than a dozen mineral species are recognized within this group.
