Our Business
American Gemstone Authority, LLC is incorporated in Nevada, with sales based out of Hanover, New Hampshire and Bangkok, Thailand.


Rubies and sapphires, mine run selection, end of the day, Pailin, Cambodia, 2005.
We travel the world visiting the top mines for many different varieties of gemstones. Some varieties we order directly ourselves, others are consigned in huge quantities (rough) to supply cutting factories in Bangkok and South-East Asia. When it is possible, we buy in cooperation with other large buyers in order to recieve the largest possible discount.
- We keep a regular supply of the following types of gemstone rough:
Amethyste, Citrine, Green Amethyst and the entire Quartz line (Cognac, Quartz Rutile, Rose de France, Rose Quartz, etc..), as well as Tourmaline, and Kunzite. Other varieties are available depending on orders volumes, opportunities, etc..
- We can cut our rough to exact customer specifications including difficult fancy cuts, concave cuts, and cut to fit provided settings. We have a speciality in cutting Kunzite allowing us to facet this stone into difficult shapes considerings it's perfect cleavage (square, octagons, pears, double cabochons checkerboard, etc.).
- We offer extremily competitive prices for callibrated
Multi-Color Sapphires (Polychrome), Tourmaline, Garnets, Spinels, Tanzanites, and Peridot from china.
- We are able to source most gemstone varieties at better then wholesale prices directly from the producing countries using our network in producing regions (Asia, Brazil, East Africa, and the Middle East).
- With a base out of Thailand, we are also able to source on the local market, which provides one of the largest gemstone markets for both rough & cut gemstones in the world.

American Gemstone Authority LLC
PO Box 300, Hanover, NH 03755, USA. Tel: 1 (603) 653 8121
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