[Jewelry making - Article 00077] - Re: [Orchid] Keum boo burnishing marks

[Marilyn M. Smith]

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    Bruce, if the gold is as thin as what is called "leaf" then you
    definitely need more than one layer. Eventually, the thin gold leaf
    will look transparent and greenish as the silver "migrates" to the
    surface. I'm not up on the chemistry here folks so don't jump on me
    for the way I've described this. One layer of leaf is also so thin
    that it is very subject to abrasion so the pumice was not a good
    idea. It's best to simply stop at the edge of the gold. If you have a
    tumbler with steel shot, this will polish the whole piece and not
    damage the gold. 

Marilyn Smith
 

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