American Gemstone Authority

Company Description

American Gemstone Authority American company with a fully owned Thai subsidiary. Through this structure, nearly all of our production is done in house. All sensitive materials are kept in house and molds and masters remain the property of our clients and are returnable at their request. US Office: American Gemstone Authority, LLC PO Box 300, Hanover, NH 03755 USA +1 617 314 6225 Jewelry Manufacturing & Production Office: American Gemstone Ltd. Building # 66/3 Soi Pramote 3 Suriyawong, Bangkok Thailand, 10500 +66 2 635 6262