[Jewelry making - Article 00750] - Re: [Orchid] Staining Sterling Silver a Green Color

[Paul Jelley]

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    Karen and Ivy, I don't really know how you would get ammonium
    polysulphide (polysulfide) in the States. In London, the only
    suppliers I am aware of are H S Walsh & Co (http://www.hswalsh.com),
    and we have been using theirs for over 15 years for patinating fine
    silver leaf. 

    However I repeated Ivy's Google search to include 'fertilizer'
    thinking there must be some mistake, to find that Kerley Chemical
    indeed claims to have first developed the liquid for just that
    purpose in 1951, in a product called NITRO-SUL. Prior to this
    search, I had been under the impression that only ammonium sulphate
    or nitrate was used in gardening products. Kerley Chemical have an
    information line on info-ag AT tkinet.com 

    Even if Google doesn't through up a specific lead for a supplier,
    you might find that a general chemical supplier in your area may
    stock it. It might also be worth checking sculpture suppliers, since
    it is also used for patinating copper and copper alloys such as
    bronze.

Paul Jelley
London

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