[Jewelry making - Article 00637] - [Orchid] Yellow tarnish on Silver

[Rick Copeland]

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    I'm having a problem with this yellow tarnish that appears on newly
    completed pieces.  I mostly work with turquoise and silver. 

    My process is that once the buffing is complete I clean the piece
    with a tooth brush and dish soap.  Then into the ultrasonic.  Then
    another scrub with tooth brush and water.  I then let the piece dry
    out overnight then I put each piece individually into a zip lock bag.
     About 1 out of 10 pieces gets this yellow tarnish on the flat back,
    polished silver side.  It comes of easily with a polishing cloth or a
    quick touch of the buffing wheel but I'd rather prevent it as I
    usually discover it the day before I'm getting ready to deliver the
    pieces to a client. 

    Any insight? 

    Thanks in advance... 

    Rick Copeland Silver Jewelry and Lapidary Artisan
    rick.copeland AT Covad.net home.covad.net/~rcopeland 
    Colorado Springs, Colorado


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