[Jewelry making - Article 00037] - Re: [Orchid] Florida Brown Silver Tarnish

[jesse Brennan]

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    There are large phosphate fertilizer operations in Florida that
    produce gypsum as a by product. 

    This may be producing a high sulphur atmospheric level. Silver
    tarnish is mostly a silver sulphide not an oxide. This will start
    showing as a yellow layer darkening to brown them blue- purple and
    then a heavy black. This probably what you see. The shop with a
    bright polish may have a better atmosphere ( the patinaed work maybe
    out gassing where your silver is) or just give better care. A light
    coat of conservators or renaissance wax may slow the reaction down.
    I have a similar mystery in central Texas-- in my house silver
    doesn't tarnish or is very slow to tarnish while at my daughters
    about 10 miles further out Silver seems to tarnish very quickly. I
    take little or no effort to protect it my daughter polishes hers and
    it will go through the color stages to black. There is something very
    different in the houses. My house and hers both have drywall I have
    been here 17 years,she has been in hers 8 years ??? We both have gas
    stoves -I have a gas drier she has electric. Her house is cleaner! 

jesse
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