[Jewelry making - Article 00071] - Re: [Orchid] Holly Blue Agate Vs Chalcedony?

[Orville & Rose Alene McArthur]

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    Technically, I think banded chalcedony is called agate and the rest
    of it is chalcedony of different forms. Chalcedony is simply a
    cryptocrystalline form of quartz. It can be a wide range of different
    colors, and there are different names tacked on different colors. But
    much chalcedony is simply called agate..moss agate, etc. Whatever the
    trade will bear. 

Rose Alene
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