[Jewelry making - Article 00143] - Re: [Orchid] Brittle Carnelian

[Ivy Fasko]

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    I found some interestingly shaped but too thick carnelian beads and
    cut them down. When you look at the cut side of the stone, you see a
    carnelian red colored region around the perimeter and then a lighter
    browny-yellowish region in the center. Can anyone tell me whether
    this is characteristic of heat treatment or dying? 

Thanks
Ivy
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