[Jewelry making - Article 00765] - Re: [Orchid] Red tiger eye

[Douglas Turet]

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>     GIA refers to it as Tiger's Eye and I'll stick with that) is
>     open-pit mined. Sometimes the brush is burned off, occasionally
>     turning the material red from the fiery blaze. In effect, it
>     becomes heat-treated via mining technique. Others say that a brush
>     fire won't reach the temperature necessary to change its' color." 


    Hi James, Unless I'm missing something here, isn't what you're
    suggesting physically impossible? I mean, don't the heat and flames
    from fires in Africa act just like the heat from fires on the
    American side of the globe... and _rise_? If they do, and if there's
    even the slightest bit of dirt beneath these burning bushes, how
    could even the most intense flames 'heat treat' gem materials
    that're both beneath and insulated from them? 

    Curiouser and curiouser, 

    Douglas Turet Another Bright Idea! / Turet Design P.O. Box 162
    Arlington, MA 02476 Tel. (617) 325-5328 eFax (928) 222-0815 
    anotherbrightidea AT hotmail.com


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