[Jewelry making - Article 00074] - [Orchid] Really deep orange yellow color gold

[Dennis Loss]

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    Hello folks, I have been working in high karat gold for a while now.
    I want to get that really deep orange yellow color. I spoke with a
    gut today that told me that the Indian 22k gold that has that bright
    color is patinated. What he really said was that: 

    1. the gold is boiled in sulfuric acid. 

    2. It is then plated [?] with a solution that has shellac in it. 

    He said this is what really gives the gold that bright orange look.
    Does anyone out there know what that 'plating' solution is? I
    question the plating aspect only because I cant' understand how
    shellac is put into a solution that somehow is affecting a real
    plating process. However, I have no idea, so if anyone can explain
    this and help with a formula I would love the info. 

thanks,
Dennis
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