Searching for Markings On Platinum Jewelry information? Follow the links below to find all the information you need and more.
https://www.liveabout.com/platinum-jewelry-information-2043747
Aug 17, 2017 · Jewelry that contains at least 950 parts per thousand of platinum group metals, with at least 500 parts per thousand of the total pure platinum, may be marked as platinum as long as the numbers of each metal are disclosed.
https://www.leaf.tv/articles/what-are-some-identifying-marks-on-a-platinum-ring/
Platinum content markings are based on parts per thousand of pure platinum in the ring. According to the Federal Trade Commission, in the United States, "Platinum" (without additional qualifications) can only be used to mark and describe rings made with at least 950 parts pure platinum throughout.
https://www.tentwothree.com/platinum_jewelry_information.asp
PLATINUM ESTATE JEWELRY HALLMARKS. Many estate jewelry hallmarks will be PT900, indicating that the metal is 900 parts per 1000 of pure platinum. The remaining 100 part are usually made with iridium which makes the jewelry harder. 900 Plat - 100Irid - means platinum alloyed with 10% iridium.
https://www.leaf.tv/articles/how-to-identify-jewelry-markings/
Note that a “950 Platinum” mark indicates that jewelry is 95 percent pure platinum, or 950 parts pure platinum out of 1,000. Identify this type of jewelry by any of these other marks: “Plat 950,” “Pt950,” “PLAT,” “PT,” “950 Plat” or “950Pt.”
https://www.invaluable.com/blog/guide-to-jewelry-marks/
Apr 06, 2020 · The study of jewelry maker’s marks is a fascinating subject, steeped in history, culture, and art. Often overlooked due to their intentionally hidden location and diminutive size, the etchings found inscribed on a piece of modern or vintage jewelry offer a window into the “who, what, and where” of the piece – and are well worth a serious look.
http://www.amaterracrianza.com/jewelry-makers-marks-in-alphabetical-order/
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