How is platinum jewelry marked?

Answer

If the jewelry is composed of 950 parts platinum per 1,000, it will be marked as 'Plat' or 'Platinum'. If there is less platinum, the amount will be specified followed by 'plat'.
1 Additional Answer
Platinum jewelry containing 850, 900, or 950 parts per thousand of pure platinum may be marked 'Plat' or 'Pt' usually accompanied by the amount of pure platinum the piece contains like '850 Pt'. If other metals are used in the mix, they are disclosed as well: '600 Pt. 350 Ir.' would indicate 600 parts pure platinum and 350 parts iridium.
Q&A Related to "How is platinum jewelry marked?"
1. Look for platinum markings. The marking will let you know how much of the piece is made of platinum. For example, 950 pt means that 950 parts per thousand of the piece is made
http://www.ehow.com/how_2051087_buy-platinum-jewel...
1 Identify them through the mark. If the jewelry show the marks of “PT” or “PLAT”, they are platinum. On the contrary, the jewelry are marked with “S
http://www.wikihow.com/Identify-Platinum-and-Silve...
PLAT or PLATINUM will be stamped on the item.
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The K stands for karats. Gold's purity is measured in karats. 18K gold is
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If the jewelry is composed of 950 parts platinum per 1,000, it will be marked as 'Plat' or 'Platinum'. If there is less platinum, the amount will be specified ...
1. Note that a “950 Platinummark indicates that jewelry is 95 percent pure platinum, or 950 parts pure platinum out of 1,000. Identify this type ...
1. Note that a “950 Platinummark 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.”. 2. R ...
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