[Jewelry making - Article 00072] - Re: [Orchid] Coloring 18k gold

[John Burgess]

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    G'day; In my opinion boiling gold in the chemicals mentioned above
    wou result in a liquid that closely resembles aqua regia. Thus, gold
    and alloys would be surface etched in a kind of 'depletion gilding' 
     The liquid would turn yellow as gold chloride is formed and
    dissolved 

-- 
Cheers for now,
John Burgess;   johnb AT ts.co.nz of Mapua, Nelson NZ



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