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What's It Made Of?  jewelry materials identification guide by Sherry Shatz, Certified Gemologist, S.C.C. is a *must* for the jewelry collector or dealer. Learn how to "properly" test using various methods for gems, precious and non-precious metals, amber, bog oak, bone, crystal, ivory, horn, jade, jet, pearls, plastics such as celluloid, casein, bakelite, cellulose acetate, lucite, shell, tortoiseshell and vulcanite.

Order one or several.

$15.25