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Tuesday, February 17, 2009

Lead Glass Treated Ruby/Blue Sapphire

Glass or Corundum, that's the Question
http://www.gemlab.net/website/gemlab/fileadmin/user_upload/Research/GEMLAB-Research-Newsletter-09-2008.pdf

Useful link:
www.gemlab.net

Lead glass treated rubies/blue sapphires has become so abundant in the market, I am wondering whether the treated stones should be called corundum, really. Today treated stones have become perfect tools for scams because many people are unaware that the lead-glass treatment exists + the materials are sold at low prices. If you are doubtful always consult a reputed gem testing laboratory.

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