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Reply To: Learning to use the conoscope

#180425
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aleta
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This is one of the best descriptions that I’ve seen. It has been a long time since I’ve used one so better to give you this. I’m just getting back to a love for gems. Read down to the explanation at the end of the article.

http://www.gemologyproject.com/wiki/index.php?title=Polariscope


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