[Jewelry making - Article 00108] - Re: [Orchid] Reflectivity of Silver

[Trevor F]

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>     I read somewhere that silver returns more reflected light than any
>     metal. is it true? 

Hello X,

    Yes, it is true.  Mark Grimwade's "Introduction to Precious Metals"
    (if you can get a copy , DO IT, great little book!) plots the
    reflectivity of the various precious metals in terms of wavelength vs
    reflectivity (in other words different colors vs amount reflected). 

    Silver outpaces all the others straight across the board.  It varies
    from around 80% at the shorter wavelengths to just under 100% at the
    long end. 

    Gold starts really low, under 50% at the low end, but increases
    rapidly --more so than any of the others-- to just under silver's
    marks, say 95%, at the long end. 

    Rhodium varies from 70% for the short to about 80% at the long end. 

    Platinum goes from 45% at the short end to about 70% at the long end. 

    Highly polished silver looks super bright and white-ish for a good
    reason. 

<edit>

    Introduction to Precious Metals
    By Mark Grimwade

    http://www.ganoksin.com/jewelry-books/us/product/0408014512.htm
    Price: $15.95

    Media: Paperback
    Manufacturer : Newnes
    Release data : March, 1985

</edit>

Cheers, 
Trevor F. 
in The City of Light

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