Article Search Results

Vanadium and Chromium-Bearing Pink Pyrope Garnet: Characterisation and Quantitative Colorimetric Analysis

Ziyin Sun, Aaron C. Palke, and Nathan Renfro, February 1, 2016

This type of pink pyrope garnet, believed to have been mined in Tanzania, shows a distinct colour-change phenomenon resulting from its unique chemical composition.

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.

A Survey of the Gemstone Resources of China

Peter C. Keller and Wang Fuquan, March 1, 1986

China has identified many deposits with significant potential to produce gemstones; various species are discussed.

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.

Pyrope-Spessartine Garnets with Unusual Colour Behaviour

D. Vincent Manson and Carol M. Stockton, December 1, 1984

Unusual colour-change garnets.

Two Notable Colour-Change Garnets

Carol M. Stockton, June 1, 1982

The gemmological properties and chemical compositions of two unusual colour-change garnets are reviewed.

The Andradites of San Benito County, California

Tedd Payne, September 1, 1981

Mines in San Benito County, California, produce andradite in various colours; some are chatoyant.

The Cause of Iridescence in Rainbow Andradite from Nara, Japan

Thomas Hainschwang and Franck Notari

“Rainbow” andradite from Nara, Japan, occurs as relatively small orangey brown crystals that show attractive iridescence in almost the entire range of the spectrum.

Article Search Results

Types

Content Type

Reviewed

Topics

Topics

Gemstones

Gemstones

Article Search Results

Types

Content Type

Reviewed

Topics

Topics

Gemstones

Gemstones

Find a Retailer

Visit the campus shop

Subscribe to Knowledge Rocks Emails

G&G Spring 2021 Edition