[Jewelry making - Article 00103] - Re: [Orchid] Antique diamond repair

[Peter Deckers]

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>     I'll say that I've never heard of or encountered a foil-back
>     diamond. 

    Foil-backed diamonds is the old way of setting of flat backed
    diamonds (it is call in Europe 'Antwerp rose'). This cut was (so I
    believe) the norm before the brilliant cut became popular. A curved
    bit of fine silver foil reflects the light back through the diamond.
    When I was in repairs, this setting was not uncommon (Holland late
    70ties). I often had to anneal the work and stone, just to bring back
    the oxidised foil to white. The difference was dramatic, as you can
    believe. This was the cheapest option. Lifting the stone and
    replacing the foil was the more expensive option. We never did
    polish back the existing foil. The fine silver foil was rolled hard,
    polished with a burnisher and domed to fit. The setting needed to be
    tide, to avoid liquid to seep in. 

Cheers
Peter Deckers
New Zealand
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