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Looking down the crystal axis of a back-lit 58.83 ct trapiche emerald
Article
Emerald: The Superstar of Trapiche Gemstones

Trapiche emeralds, which display a distinct six-spoke wheel pattern, set the standard as some of the finest and most spectacular crystals ever unearthed.

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Article
Pyrope Garnet and Montana Sapphires Highlight Winter 2015 G&G

G&G Brief presents an overview of the content of the Winter 2015 issue of Gems & Gemology.

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Abstract Header from the 2009 issue of Gems & Gemology
Abstracts; Summer 2009

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.

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The Ramaura Synthetic Ruby

A report on the new synthetic ruby trade-named Ramaura.

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2010 Gemological Abstracts Header
Abstracts; Summer 2010

This article, from the Summer 2010 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside Gems & Gemology.

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“Diffusion Ruby” Proves to be Synthetic Ruby Overgrowth on Natural Corundum

A relatively new production of red corundum, reportedly from Bangkok, has been offered for sale in recent years.

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Introduction to Analysing Internal Growth Structures: Identification of the Negative d Plane in Natural Ruby

This article presents the methods and instruments needed to analyse the internal growth structures of corundum.

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Synthetic Rubies by Douros: A New Challenge for Gemmologists

Greek manufacturer J. & A. Douros introduced a new flux synthetic ruby in early 1993.

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Abstracts; Autumn 1991

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.

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New Rubies from the Morogoro Area, Tanzania
New Rubies from the Morogoro Area, Tanzania

The authors present the mineralogical and gemmological properties of rubies found recently in the Morogoro area of Tanzania that have many features in common with rubies from Myanmar (Burma) and other comparable marble-type deposits.

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