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https://www.afashionblog.com/platinum-jewelry/
This means platinum jewelry is made of 900 parts of pure platinum and 100 parts of copper. Jewelry not containing any stamp in the US is normally assumed to be impure with less than 50% of platinum. 90-95% platinum content is considered to be high-grade platinum for making jewelry.
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Oct 21, 2017 · What Is Platinum Jewelry Made Of. ... Platinum rings jewelry education precious metals the science history care and story arden jewelers everything you need to know about patina what are pgm marks fascinating of jewellery understanding loupe truefacet white gold vs ring guide how clean for your metal yellow rose s so special howstuffworks ...5/5(4)
https://www.jewelryshoppingguide.com/what-is-platinum/
You will rarely find 100% pure platinum jewelry. Platinum is almost always mixed with other metals, but needless to say the higher the percentage of pure platinum the more expensive the metal. Copper, ruthenium, iridium, rhodium, palladium and cobalt are the most popular base metals used in …
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Feb 17, 2021 · Platinum jewelry is made from very pure platinum. As compared to gold, platinum falls between the 18-karat and 24-karat range, with 18 karat being approximately 75% pure and 24 karat being the purest. Since 18-karat jewelry is 75% pure, that means that the other 25% of the piece is an alloy, such as silver, zinc or copper.
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