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https://www.liveabout.com/platinum-jewelry-information-2043747
Aug 17, 2017 · Jewelry that contains at least 950 parts per thousand of pure platinum may be marked or described as "Platinum". Jewelry that contains 850, 900 or 950 parts per thousand of pure platinum may be marked "Plat" or "Pt" if a number is used in front of the term to disclose the amount of pure platinum in the mix, such as :
https://www.consumer.ftc.gov/articles/0294-platinum-jewelry
Platinum jewelry should be labeled so you can tell how much platinum there is in the piece. Any jewelry that is not labeled platinum, plat., or pt. contains less than …
https://www.leaf.tv/articles/what-are-some-identifying-marks-on-a-platinum-ring/
Platinum is a heavy, precious metal, gray-white in color and noncorrosive. The platinum group of metals (PGM) are platinum, iridium, palladium, ruthenium, rhodium and osmium. The major platinum jewelry maker and consumer markets today are China, Japan and the United States. Platinum rings and ...
https://www.specialtymetals.com/blog/2019/9/13/what-is-925-platinum
Sep 13, 2019 · When an item is stamped “925 Platinum,” it means that it is made of 92.5% platinum. Well, that certainly tells you something. But before you pay your good money for a piece of jewelry, here is some other information you need to know about that “925” classification:
https://www.jewelryshoppingguide.com/what-is-platinum/
A hallmark is a small identification symbol that is stamped on the jewelry, indicating the level of purity of the metal. Platinum used in jewelry, like this ring, is generally of higher purity than gold. Some common platinum hallmarks are: 950 Plat or 950 Pt.
https://thinkengraved.com/blogs/news/a-guide-to-what-jewelry-stamps-mean
Jul 19, 2018 · This is basically the maker’s mark for Pandora Jewelry. This is stamped in almost all Pandora jewelry except for maybe a few smaller pieces. What does sk9 Platnaire mean? Platnaire is an alloy consisting of 92.5% silver, 5% platinum and 2.5% …
https://www.gold-traders.co.uk/blog/simple-platinum-hallmark-guide/
Platinum hallmarking was introduced in the UK in 1975 as a result of legislation brought about by the Hallmarking Act of 1973. Prior to this date, items containing platinum would often carry no markings or simply ‘Plat’ or ‘Platinum’ and would be of varying purity. A typical platinum hallmark
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