[Jewelry making - Article 00447] - [Orchid] Special care stones

[Robert P. Lowe Jr.]

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    This is part of an "off-list" response that I sent to a subject that
    had come up on the list. I think that others might be interested in
    it. 

>       when you mention that some of the stones such as the "special
>     care stones" are heat sensitive, up to what degrees Celsius can
>     they handle in temperature 

    I've never really measured the temperature, just watched what has
    happened with jewelers who didn't heed my or other's warnings,  -
    like a large nice pink Kunzite in a shop window in the direct
    sunlight for a long period which became completely colorless. Some
    of the irradiated Blue Beryl can also have the color degrade. I
    don't know about the Irradiated Blue Fluorite - I have never dealt
    with it. 

    So as a precaution, when I sell Blue Beryl, a paragraph of how to
    care for the stone goes on the invoice. Basically - no steamer, no
    torch, no heated ultrasonic, no prolonged periods in direct
    sunlight. 

    Best regards Robert Lowe Lowe Associates - Brasil Gemstones, Rough,
    Specimens Tucson February 6 - 11, 2003 - GJX # 205 e-mail: USA   
    <robertplowejr AT juno.com> e-mail: Brasil <robertplowejr AT uol.com.br>

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