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Gemstones@
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Gemmology and Gemstones in Scotland
www.scotgem.demon.co.uk
Gemology & Lapidary Pages
Covers topics from how to cut and polish gem stones, to grading them.
www.tradeshop.com/gems
Instituto Brasileiro de Gemas e Metais Preciosos
IBGM is the official page of the Brazilian Institute of Gems and Precious Metals.
www.ibgm.com.br
Introductory Gemmology
Definitions concerning physical properties of gemstones.
www.ganoksin.com/borisat/nenam/physical.htm
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