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Garnet
Garnets are a set of closely related minerals forming a group, with gemstones in almost every color.
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The Talisman of Charlemagne: New Historical and Gemological Discoveries
Reveals new details about this historical jewel and the results of its first gemological analysis.
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Article
December Blues: Birthstone Gifts that Will Delight
Looking for a gift for someone special? December’s birthstones offer a treat for every taste, style and personality – even if it’s not their birth month.
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Article
Metalwork Takes a Bow: Techniques that Enhance Gemstone Jewelry
This collection of jewelry images illustrates how metalwork techniques showcase gemstone and jewelry designs.
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Discovery of Color-Change Chrome Grossular Garnets from Ethiopia
The first known group of color-change gem-quality chrome grossular garnet, reportedly from Ethiopia, is examined in GIA’s Carlsbad lab.
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Gemstone Guidebook Project
A project coordinated by GIA and the NGO Pact provides a valuable educational tool to women miners in Tanzania.
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An Early Byzantine Engraved Almandine from the Garibpet Deposit, Telangana State, India: Evidence for Garnet Trade Along the Ancient Maritime Silk Road
Analyzes the chemical composition and inclusion characteristics of this ancient artifact.
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Update on Russian Demantoid Production
Alexey Burlakov shares insights on the current production of Russian demantoid and emeralds.
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Update on the Green Dragon Demantoid Mine in Namibia
Stephan Reif explains the mine-to-market approach at the largest continuously operating demantoid deposit.
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Interview with a Kenyan Miner and Dealer
Miriam Kamau relates how she became a prominent dealer and miner.
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Unheated and Unusual Colors
Margit Thorndal of Madagascar Imports offers her perspective on the colored stone market.
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