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Some will be for sale at the show, and orders will also be taken because most of my new things are proto-types and made for personal consumption.
(It's so fun to make jewelry and then it all yours - I love it!)
So the technique is called acid etching, similar to etching for print making -
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I‘ve been doing this technique for over 20 years...
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It is a recognizable 'signature feature' of my jewelry!