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Jaipur, India: The Global Gem and Jewellery Power of the Pink City

Andrew Lucas, Nirupa Bhatt, Manoj Singhania, Kashish Sachdeva, Tao Hsu, and Pedro Padua, January 26, 2017

Examines Jaipur’s role as a coloured stone cutting and jewellery manufacturing centre, with profiles of 17 companies and their factory, trading and retail operations.

Titanium-Coated Tanzanite

Amy Cooper and Nathan Renfro, April 30, 2014

For the first time, GIA's laboratory has examined tanzanite colour-coated with titanium.

These five tanzanite samples (0.39–0.82 ct) proved to be colour-coated with titanium. Photo by Don Mengason.

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Titanium-Coated Tanzanite

Amy Cooper and Nathan Renfro, February 7, 2014

For the first time, GIA's laboratory has examined tanzanite colour-coated with titanium.

Abstract Header from the 2009 issue of Gems & Gemology

Abstracts; Summer 2009

Brendan M. Laurs, Thomas W. Overton

This article, from the Summer 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.

Abstracts; Autumn 1991

Dona M. Dirlam

This article, from the Autumn 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.

Coated Tanzanite

Shane F. McClure and Andy H. Shen

The examination of 23 tanzanites coated by an apparently new technique.

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