[Jewelry making - Article 00449] - Re: [Orchid] Turquoise looses color in attack

[Sam Patania]

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    I have worked with turquoise for many years and found no problems
    with attack and natural turquoise. I have had problems with the
    Sleeping Beauty turq. (solid blue with sometimes with matrix) which
    is Zachary processed which is supposed to harden and not color
    treat. I find in polishing and washing Sleeping Beauty fractures not
    seen when the stone is dry come out. If I have not gotten polishing
    compound in these cracks they will usually completely disappear when
    dry. 

    Since the stone is already out of the mount I would just replace it
    since repolishing it will only remove any remaining treated surface.
    Fracture seal could fill it so it is not noticeable but then you are
    treating it yourself which the client may not appreciate. Try
    putting it under a lamp to dry it to see if it was just being wet
    that caused the crack to appear. 

Sam Patania, Tucson
www.bahti.com
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