Gems and GemologyGems and Gemology
Home
Thursday, December 4, 2008Printer-Friendly Page
Service Center
Search
My GIA
Back Issue

Spring 1994, Volume 30, Issue 1

Click to Print
Gem News


 

DIAMONDS

  • Cubic zirconia misrepresented as diamond

COLORED STONES

  • Jade-cutting factory on the Myanmar-Thai border

ENHANCEMENTS

  • Instability of diamond filling
  • Coated sapphires misrepresented as diffusion treated

TUCSON '94

COLORED STONES

  • Arizona gem materials
  • Emeralds from Brazil
  • "Jurassic Park" gems and carvings
  • Gems from Madagascar
  • Myanmar gems
  • More on obsidian
  • Cat's-eye opal from Brazil
  • Opal from Ethiopia
  • Miscellaneous notes on peridot
  • Russian uvarovite garnet...
  • ...and other Russian materials
  • Rubies and other gems from Orissa
  • Miscellaneous notes on tourmaline

ENHANCEMENTS

  • Update on diffusion treatment

SYNTHETICS AND SIMULANTS

Appears on pages 47-57

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 08/15/05 09:08 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