Gems and GemologyGems and Gemology
Home
Wednesday, November 19, 2008Printer-Friendly Page
Service Center
Search
My GIA
Back Issue

Spring 1997, Volume 33, Issue 1


Click to Print

Gem News


DIAMONDS

  • "Opalescent" and other unusual diamonds
  • Diamond "pearls"

COLORED STONES AND ORGANIC MATERIALS

  • Andradite from Arizona
  • Carved aquamarine with natural crystal faces
  • Cat's-eye chrysoberyl
  • Unusual trapiche emerald
  • The return of jet
  • "Bicolor" labradorite
  • "Rainbow" obsidian hearts
  • Botryoidal white opal from Milford, Utah
  • Petrified palm wood as an ornamental material
  • Drusy iridescent pyrite from Russia
  • "Wasp-tail" citrine/smoky quartz
  • Quartz with "rainbow" hematite inclusions...
  • ...and with pyrite inclusions
  • Orange sapphire and other gems from the Tunduru region
  • Tanzanite in abundance: Gem carvings and "enhydro" crystal section
  • Tourmaline from the Neu Schwaben region, Namibia: A major new player

TREATMENTS

  • Gold-electroplated jade and silver ore

SYNTHETICS AND SIMULANTS

  • Assembled stones using inset gem material
  • Red and purple hydrothermal synthetic beryl
  • Dichroic glass as an opal imitation
  • Aventurescent synthetic quartz
  • Synthetic opal in glass

MISCELLANEOUS

  • "Amphoragems"

ANNOUNCEMENTS


Appears on pages 60-70

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