[Jewelry making - Article 01659] - Re: [Orchid] Working with rainbow obsidian

[Hans Durstling]

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    What you'll encounter using rainbow obsidian in a ring is scratching.
    Being a natural glass, obsidian scratches as glass would do, eagerly,
    deeply, chippy and distressingly apparent against the dark of the
    stone. I've been storing some rainbow cabs I cut about two years ago
    on a foam pad in a glass covered display case. The case doesn't get
    moved around much at all. Yet even so a visibly abraded patch has
    formed on the tops of the cabs where they contact the glass. 

Cheers,
Hans Durstling
Moncton, Canada
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