Pinchbeck

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Photo courtesy of Scott Papper, GIA GG, AJP, CM (NAJA), Global Gemology & Appraisals

Pinchbeck is an alloy of copper and zinc that was invented by Christopher Pinchbeck in 1720.

Pinchbeck is composed of 83% copper and 17% zinc.  It had a similar appearance to gold, but was much more affordable.