[Jewelry making - Article 01409] - Re: [Orchid] Easy Telling Brass wire from gold wire?

[Dave Mereski]

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Hi Karen

    I always use a fairly concentrated nitric acid solution to define
    brass. In a well ventilated area or under a fume hood, dip the wire
    into the solution. If it is brass you will get a bright green
    effervesence and oxidation to the metal. Rinse with water to stop the
    reation. With gold, there will be no reaction visible. Handle the
    acid carefully...use rubber gloves etc. 

Dave
Dave Mereski
The Goldworks Ltd.
www.thegoldworks.net
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