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Gemological Science International
Associate Member
Gemstones
Mark Gershburg
President
Gemological Science International
Contact information may be available to logged in members.
Company/Business
Gemological Science International
Associate Member
Gemstones
Agate, Alexandrite, Amethyst, Aquamarine, Beryl, Bi-color Tourmaline, Carvings, Chrysoberyl, Citrine, Corundum, Cultured Pearls, Emerald, Fancy Color Diamond, Fancy Color Sapphire, Garnet, Morganite, Opal, Paraiba Tourmaline, Quartz, Sapphire, Spinel, Tanzanite, Topaz, Turquoise, Zircon
Business Categories
Gemological Laboratory