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Gemstones

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The Hidden Beauty of Amber: New Light on an Old Subject

John I. Koivula, March 1, 1981

The surprising inner world of inorganic inclusions in amber is explored through the use of polarised light and microscopic techniques.

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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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Blue amber beads from the Dominican Republic
Colour Phenomena of Blue Amber

Yan Liu, Guanghai Shi, and Shen Wang, July 25, 2014

Investigates the presence of fluorescence, rather than iridescence, as the cause of colour in blue amber from the Dominican Republic and Indonesia.

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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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