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

Winter 2006, Volume 42, Issue 4


Click to Print

Gem News International


DIAMONDS

COLORED STONES AND ORGANIC MATERIALS

  • Green augelite from Peru
  • Bicolored beryl from the Erongo Mountains, Namibia
  • Diopside from Afghanistan
  • California jadeite with copper inclusion
  • Labradorite from Chihuahua, Mexico
  • Gem news from Mogok, Myanmar
  • Moonstone from Madagascar
  • A large phenomenal fire opal with possible uranium-related luminescence
  • “Sunset quartz”: A new gem material from Brazil
  • Swedish Blue (slag) and Swedish Iron Ore
  • Tourmaline mining at Nandihizana, Madagascar
  • Green uvite from Afghanistan

SYNTHETICS AND SIMULANTS

TREATMENTS

  • Update on “chocolate” Tahitian cultured pearls
  • Treated violetish blue to violet quartz from Brazil
  • Circular ring-like inclusions in a diffusion-treated sapphire
  • Diffusion-treated synthetic sapphire with unusual fluorescence

CONFERENCE REPORTS

  • 32nd Annual GSJ Gemological Conference
  • International Mineralogical Association Biennial Meeting

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 01/25/07 10:56 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