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https://www.ganoksin.com/article/platinum-alloy-applications-for-jewelry/
Platinum Alloy Applications for Jewelry by Jurgen J. Maerz. Before World War II platinum was the metal of choice for many fine jewelry pieces especially engagement and wedding rings. Platinum was also used to enhance the beauty of diamonds and other precious gems. Many of the world’s greatest diamonds are set in platinum…
https://www.stuller.com/articles/view/popular-us-platinum-jewelry-alloys/
Aug 15, 2012 · Popular U.S. Platinum Jewelry Alloys. By Stuller August 15, 2012 The following is a brief description of the general properties and applications of the most popular Pt alloys currently in use in the U.S. for jewelry manufacturing. 95% Pt / 5% Ru. Ruthenium is a grain refiner, meaning it gives the alloy a tight grain structure. ...
https://www.carreracasting.com/services/casting-service/platinums
Platinum is the ultimate in luxury. The number one choice for bridal jewelry. All of our platinum comes from Johnson Matthey, the world wide leader in platinum production. **A ll of our platinum is E co-friendly. Read our Environmental Policy or request a compliance letter from one of our suppliers.
http://www.capepreciousmetals.com/wp-content/uploads/2018/01/guide_to_Pt_alloys.pdf
Jewelry made from platinum/palladium alloys requires extensive burnishing to work-harden the surface and ensure a fine polish. Furthermore, these alloys have a grayish color; in Japan, many products cast with this alloy are subsequently rhodium-plated. By tradition, platinum 950/palladium is used extensively in …
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