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Turquoise
Azure sky, robin’s egg blue: Vivid shades of turquoise define the color that’s named after this gem.
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Turquoise Description
Turquoise might lack the sparkle and clarity of transparent colored gemstones like ruby, emerald, and sapphire, but its multi-layered history and soul-satisfying color make it a desirable gem. Its color can range from dull greens to grass greens to a bright, medium-toned, sky blue
Turquoise Quality Factors
Typically, turquoise is judged on three basic quality factors: color, texture and the presence or absence of matrix. Learn more about turquoise and what makes this gem so sought after!
Abstracts; Winter 1991
This article, from the Winter 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.
Polymer-Impregnated Turquoise
A large “Persian” turquoise cabochon was impregnated with a material that was also present in cavities on its base.
A Historic Turquoise Jewelry Set Containing Fossilized Dentine (Odontolite) and Glass
Investigating a set of six antique brooches set with diamonds and light blue cabochons.
The Identification of Turquoise by Infrared Spectroscopy and X-Ray Powder Diffraction
Turquoise Planet Earth
A sphere of Armenian turquoise with natural brown matrix material mimics planet Earth.
Turquoise-Rock Crystal Composite
Examination of a faceted rock crystal backed by a slice of turquoise—an obvious but unusual combination of gem materials.
