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Figure 9. The parcel of rough spinel on the left, reportedly from Tajikistan, contains pieces weighing up to 48.5 g. The seven faceted spinels on the right (9.04–28.16 ct) were fashioned from some of this rough.

Purplish Pink Spinel from Tajikistan: Before and After Cutting

Nicholas Sturman, March 1, 2009

Purplish Pink Spinel from Tajikistan: Before and After Cutting

An Early Byzantine Engraved Almandine from the Garibpet Deposit, Telangana State, India: Evidence for Garnet Trade Along the Ancient Maritime Silk Road

H. Albert Gilg, Karl Schmetzer, and Ulrich Schüssler, August 6, 2018

Analyses the chemical composition and inclusion characteristics of this ancient artefact.

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.

New Chromium- and Vanadium-Bearing Garnets from Tranoroa, Madagascar

Karl Schmetzer, Thomas Hainschwang, June 1, 2002

Pyrope-spessartine garnets from Tranoroa, in southern Madagascar, contain appreciable Cr and somewhat lower V contents.

Bohemian Garnet – Today

Jochen Schlüter and Wolfgang Weitschat, September 1, 1991

Red garnets have been mined in the Bohemian Hills of Czechoslovakia since the 16th century.

Pastel Pyropes

Carol M. Stockton, June 1, 1988

Pyrope garnets occur in near-colourless to light orange and pink, as well as the familiar red.

Gem-Quality Grossular Garnets

D. Vincent Manson and Carol M. Stockton, December 1, 1982

The gemmological classification and identification of gem grossular garnets is examined.

Garnets from Madagascar with a Colour Change of Blue-Green to Purple

Karl Schmetzer and Heinz-Jürgen Bernhardt, December 1, 1999

Gemmological, chemical, spectroscopic and microscopic properties of blue-green colour-change garnets from a new deposit near Bekily, Madagascar, are given.

The Elahera Gem Field in Central Sri Lanka

Mahinda Gunawardene and Mahinda S. Rupasinghe, June 1, 1986

The Elahera gem field currently provides approximately 35% of the gemstones exported from Sri Lanka.

Gem Garnets in The Red-To-Violet Colour Range

D. Vincent Manson and Carol M. Stockton, December 1, 1981

This article shows that the characteristic of colour appears to have little correlation with variations in bulk (not trace) composition or physical properties.

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