[Jewelry making - Article 01012] - Re: [Orchid] Petrified Pearls

[Steelybone]

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    "Petrified" means turned to stone, and is generally applied to
    things that started out organic (wood) or were bio-minerals (shell,
    bone) and now have a changed chemistry or crystalline structure.  If
    the pearls you found are unchanged - and if they're still nice and
    pearly, that may be the case - they may just be old.  Not everything
    buried is fossilized.  If you have a broken or damaged one, try the
    geology department at a local college.  They can do a thin section
    and analyze it with a petrographic microscope, and tell you a lot
    about its history. 

Tas 


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