[Jewelry making - Article 00128] - [Orchid] Rhodium plating tanzanite jewelry

[rene howard]

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    We occasionally have tanzanite rings in set in white gold to be sized
    up or down and since we rhodium plate anything white gold or
    platinum, we would do these pieces also. My boss had an unusual
    experience where he rhodiumed a ring with tanzanite in it and the
    tanzanite changed color on him. Now if we get a tanzanite ring we
    won't rhodium plate it. Does rhodium affect tanzanite? Other than
    opal, lapis, pearl or turquoise, what other materials would rhodium
    destroy?
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