[Jewelry making - Article 01160] - Re: [Orchid] Acid polishing Coral?

[Rocklady]

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>      while he would confirm it was being used on red coral, he would
>     not tell me what the acid was. He did indicate that they just
>     'painted' it on and then neutralized it (I guess with soda). 

    Coral chemically is very similar to the Mexican 'onyx', that is
    mainly calcite. I would think that what ever is used on onyx can be
    used, though it may need to be more dilute, on coral. 

    My observations. From Slowly warming, I think spring actually may
    have found us,  Calgary, Alberta, Canada. 

    Karen Seidel-Bahr the 'ROCKLADY'   rocklady AT nucleus.com=20 K.I.S.
    Creations May your gems always "Sparkle"

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