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Gems and Precious Stones

  Link Details for: Gems and Precious Stones
Link Title: Gems and Precious Stones Open in a new window
Link URL: http://ist-socrates.berkeley.edu/~eps2/
Link Details: An on-line gem and jewelry course at UC Berkeley.
Category: Top : Science : Earth_Sciences : Geology : Rocks_and_Minerals : Gemstone
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Gems and Precious Stones