[Jewelry making - Article 00014] - Re: [Orchid] Cutting Gem Silica

[MillsGem]

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http://www.ganoksin.com/orchid/archive/200507/msg01281.htm

    Quantum Quattro Silica is a trademark name used to market a complex
    copper ore originating in Namibia, but also found elsewhere in the
    world. Refering to it as a variety of quartz is defintely a stretch.
    Calling it gem silica is more of a stretch. Most people refer to
    chrysocolla in chalcedony as being gem silica. On the other hand,
    why wouldn't one refer to chrysoprase as gem silica ? There have been
    many attempts to subvert common semi precious gem names for purposes
    of marketing. I remember when "parrot wing" was a very popular
    copper ore used for lapidaruy purposes. Then there is Eilat Stone
    from Israel. It is sold to tourists with representations about being
    rare and valuable. I quite agree that all of these copper ores are a
    lot more valuable as baubles than they are as copper ore. And, I
    completely agree that they can be quite beautiful........rare?
    seldom......valuable? not very.

Ron Mills, Mills Gem Co. Los Osos, Ca.


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