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Sapphire (8)
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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

Sharon Bohannon, May 17, 2019

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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Suite containing over 36 carats of Yogo sapphire
Gemmological Characterisation of Sapphires from Yogo Gulch, Montana

Nathan D. Renfro, Aaron C. Palke, and Richard B. Berg, August 6, 2018

A look at the mining and distinguishing characteristics of this naturally vibrant blue sapphire.

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GG WN15 Cover
Article
Pyrope Garnet and Montana Sapphires Highlight Winter 2015 G&G

Russell Shor, February 1, 2016

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

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.

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2010 Gemological Abstracts Header
Abstracts; Winter 2010

Brendan M. Laurs, Thomas W. Overton

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

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2010 Gemological Abstracts Header
Abstracts; Summer 2010

Brendan M. Laurs, Thomas W. Overton

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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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.

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Examination of Three-Phase Inclusions in Colourless, Yellow and Blue Sapphires from Sri Lanka
Examination of Three-Phase Inclusions in Colourless, Yellow and Blue Sapphires from Sri Lanka

Karl Schmetzer and Olaf Medenbach, June 1, 1988

Three-phase inclusions in untreated natural colourless, yellow and blue sapphires from Sri Lanka were found to consist of liquid and gaseous carbon dioxide as well as needle-like to tabular crystals of diaspore.

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The internal structures of natural pearls from the marine mollusk Pinctada maxima are the subject of the lead article in this issue. The scattered loose pearls on the cover are from Paspaley’s natural pearl collection, which includes one discovered in the 1970s at the Eighty Mile Beach fishing grounds
G&G Spring 2021 Edition
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