[Jewelry making - Article 00719] - Re: [Orchid] Staining Sterling Silver a Green Color

[John Burgess]

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    G'day; I very much doubt if ammonium polysulphide is available in
    shops; laboratory suppliers stock it. But calcium polysulphide is
    sold in garden supply shops as a mild fungicide and lichen remover;
    look for it in the fungicide shelves or ask for 'lime sulphur'. It
    will blacken silver easily. 

    It is a yellow liquid smelling disgustingly of rotten eggs like it's
    ammonium brother. Don't open it inside the house; keep it in a dark
    bottle in the garden shed, or it will make the place stink like
    blocked lavatories! Do keep it away from children. It is not
    harmless, but there is no problem if it is used sensibly. Dilute it
    with water as required. 

    Finally, sulphates such as ammonium sulphate are of no use in this
    case. 

    Have a lovely Christmas, hannukar or whatever. 

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

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