[Jewelry making - Article 00373] - Re: [Orchid] Soldering with diamonds in place

[Tom Arnold]

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    Hi Helen, I meant to respond right away about your diamond, but
    goofed. Has It been resolved? Quite often, a stone is not burned at
    all; dirt is just burned onto it. A burned diamond is very white with
    a frosted surface. It must be pulled and given to a diamond cutter
    for repolishing. This actually removes very little weight. It isn't
    ruined by any means. If the diamond has a brownish burned look to it,
    it is not burned at all. Clean the piece the best you can. Dry any
    water off it.Dip the ring in boric acid, borax and alcohol and then
    burn the alcohol off. Now, heat the diamond as hot as you can without
    getting it hot enough for the retipping solder to flow. As you watch,
    the anti- oxidising material will cause the brown stain to magically
    disappear. Let it cool slowly and then pickle it out and your diamond
    will be as good as new. I've been repairing jewellery for so many
    years now that I've had to do this many times and it has never gone
    wrong. It usually happens from trying to rush a job thru the shop
    without getting it good and clean first. Anyway, be of good cheer and
    let me know how everything works out. 

Tom Arnold
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