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Spring 2000, Volume 36, Issue 1


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Gem Trade Lab Notes


  • DIAMONDS
    - Chameleon, with Blue-to-Violet “Transmission” Luminescence
    - With Evidence of Another New Diamond Treatment
    - Light Blue Synthetic
  • DUMORTIERITE
  • Massive Pink HYDROGROSSULAR Carving
  • PEARLS
    -     Black Cultured, from Baja California, Mexico
    - Natural, with Coating

Lab Notes Editors:
Thomas Moses, Ilene Reinitz, Shane F. McClure - GIA Gem Trade Laboratory

Contributing Editors:
G. Robert Crowningshield - GIA Gem Trade Laboratory, East Coast
Karin Hurwit - GIA Gem Trade Laboratory, West Coast
Mary L. Johnson - GIA Gem Trade Laboratory, West Coast
Cheryl Y. Wentzell - GIA Gem Trade Laboratory, West Coast



Appears on pages 60-65

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