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- Mar 11, 2013
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I found this detailed description - hand piercing was done after die striking, I didn’t realize that hand piercing was part of the process.

Sell Antique Die-Cut Hand-Pierced Diamond Rings - C. Blackburn Jewelers
We recently purchased a beautiful antique diamond ring, which was die-struck in platinum and then pierce-sawed by hand into a leafy scroll design. It is a truly gorgeous antique engagement...

There’s another description on platinum use in jewelry by Langs you can search for thats I erest8ng.