Gems and GemologyGems and Gemology
Home
Thursday, November 20, 2008Printer-Friendly Page
Service Center
Search
My GIA
Back Issue

Fall 2006, Volume 42, Issue 3

Click to Print
Geology of Gem Deposits


Garnet Inclusions in Yogo Sapphires
Andrea Cade and Lee A. Groat

Geology and Mining of Southern Tanzanian Alluvial Gem Deposits
Jim Clanin

Geologic Origin of Opals Deduced from Geochemistry
Eloïse Gaillou, Aurélien Delaunay, Emmanuel Fritsch, and Martine Bouhnik-le-Coz

Diamond Occurrence and Evolution in the Mantle
Jeff Harris

Geochemical Cycles of Gem-Forming Elements: What It Takes to Make Tourmaline, Beryl, Topaz, Spodumene, and other Pegmatitic Gems
David London

The Miarolitic Stage in Granitic Pegmatites: How Mother Nature Makes Big, Clear Crystals
David London

Some Open Questions on Diamond Morphology
Benjamin Rondeau and Emmanuel Fritsch

The Gel Model for the Formation of Gem-bearing Pockets within Granitic Pegmatites, and Implications for Gem Synthesis
Matthew C. Taylor

The Sandawana Model of Emerald Formation
J. C. (Hanco) Zwaan

 

Back to Table of Contents

Click Here to Buy This Issue or to Subscribe to Gems & Gemology

Home | About GIA | Ethics Helpline | Education | Laboratory | GIA Reports | Research | Instruments & Books | Alumni Association
Gems & Gemology | Employment at GIA | Careers Available | Newsroom | Publications | Library | Events & Trade Shows | Support GIA | GIA History | How to Buy a Diamond
Contact | Search | Site Map | Help
This page was last updated 10/28/08 09:13 AM
Use of this site signifies your agreement to its terms of use.
©2002 - 2008 Gemological Institute of America Inc.
GIA is a nonprofit 501(c)(3) organization.
All rights reserved.
World Headquarters and Robert Mouawad Campus
5345 Armada Drive, Carlsbad, California 92008
Tel: 760-603-4000