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10:48
YouTube
Gemology for Schmucks
Best Gemstone Tool (Spectroscope)
The best gemstone identification tool, and my all time favourite is the hand held spectroscope. This video will explore how it works, what you need in order to learn how to use it effectively, and some of the limitations of the tool. New Copies of the OPL book appear to be available to buy on the manufacturer OPL's website directly: https://www ...
34.2K views
Jul 12, 2023
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