There are many different types of opal in the world, including natural and man-made. Natural opal is also named solid opal. Man-made opal includes doublets, triplets and treated opal.
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STUNNING GEM! 1.36 NATURAL OPAL 925 STERLING SILVER SIZE 6 /RING17967 US $14.49 (2 Bids) End Date: Wednesday Jun-19-2013 20:47:15 PDT Add to watch list |