[Jewelry making - Article 00558] - [Orchid] Alberta opal & opalized clams

[tom poulsen]

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    Can anyone tell me the scoop on Alberta opal and how it's worked? I
    recently viewed some green ick at a rock show and was told that it
    was Ab. opal? Also I've found some stone of sorts inside of
    pertrified clams in the bear paw shale formations, smocky lavender to l. 
    pink, what is it?

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