[Jewelry making - Article 00151] - Re: [Orchid] Blue Quartz/Blue Agate

[Kenneth Ferrell]

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    Keep in mind that there have been quite a few deposits of Blue
    Chalcedony or for us commoners AGATE, one very large deposit in
    Malawi or something like that in Africa, and then there is the
    Ellensburg deposit, and one in the Mojave Desert But these are not a
    bright vivid blue they are more of a very light very pale gray blue
    with the Ellensburg and the Mojave deposits producing the better
    colors. Blue Chalcedony was quite popular two or three years ago the
    better colored material was bringing several dollars a carat. I just
    got through cutting some of the African material and it's just your
    typical micro or crypto crystalline silicon in other words it's just
    an agate. If your material is a very bright blue it is probably just
    dyed agate Excuse me I meant Chalcedony I forgot where I was <grin> I
    used a lot of it until I found out how quickly it lost its color when
    exposed to sunlight, Oddly enough the green dyed material doesn't
    loose it's color very easy nor does what is sold as black onyx which
    is still just dyed agate, but the green and black seem to be quite
    permanent colorings, 

Kenneth Ferrell


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