All posts tagged "black precious opal"

  • Gem Profile Oct. 7: Black Precious Opal

    Daily Wire Jewelry Making Tip for October 7, 2011 Black Precious Opal one of a series, Mystifying Opals This article is one of a six-part series on Opal. Here is a complete list of our Opal articles:...

    • Posted October 6, 2011
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