[Jewelry making - Article 00399] - Re: [Orchid] [Source] Ammonite

[David Owen]

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    Helen; Ammolite is a trade name for at least one of the mining firms
    mining the Canadian ammonites. They are triplets, they are trade
    named ammolite but they are ammonite they also use that name for
    their solid stones. Ammonites are found all over the world however
    only the ones from this specific area have the opalescence. If I
    remember it is due to a mineral called corderite. 

Dave Owen
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