Feb 092015
 

Jewelry stampings, P4SR stamp, what does it mean?

p4sr ring

This and other odd stampings in American jewelry  are non-traditional weird mixes of metals which enable the manufacture of what looks like gold or platinum metal, but with a unproven much less valuable metal mixture.  I say unproven because there is no track record to see if it can be repaired and/or worked with, if it is color stable, or chemically reactive (will it last or corrode or discolor).  The mixtures were not publicized, and many are still held secret. This does not add any confidence to the reason for the creation of the metal, other than to mislead consumers about the value of what they are purchasing.  So far most mixtures have a pathetically low percent of gold or platinum.  P4SR for example is 1 to 3% gold or platinum plus or minus a pinch and 80% silver with a couple of other cheap metals added into the brew.  In America gold is usually stamped 10k (41.7% pure gold), 14k (58.5%), 18k (75% pure), whereas platinum is either 950 (95% pure) or 900 (90% pure) and sterling silver is stamped 925 (92.5% pure silver).  All other unusual stamps and stamps with the k in the wrong position, or stamps inside a box, etc. should be suspect if made or sold in North America.

 Posted by at 5:36 pm

  10 Responses to “What Do Jewelry Stampings, Such As P4SR, Mean?”

  1. 925 silver. What does the c after stand for

  2. My ring looks platinum its only.mark is a heart on the inside of band with and r in the center of the heart

  3. I have an earing where the stamp says 10k then there’s a mark next to it that looks like an s or a 5 not sure but my earing’s back piece you have to screw in for security.

  4. I have an earing where the stamp says 10k then there’s a mark next to it that looks like an s or a 5 not sure but my earing’s back piece you have to screw in for security. Does anybody know what that mark is and what it means

  5. I bought a pendant that is silver with a blue stone in the middle that swings. On the back of the setting that holds the blue stone, is stamped “57″ at the top of the circle setting then “PCT 002357″. What does this mean? Thank you

  6. Have gold diamond ring that is beautiful. Stamped P14K on inside band. Other markings on inside are DQ CZ whats all this mean???

  7. I have some earring in silver /gold stamped 57 looks like it might be 51 what does that mean

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