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What is the stamp for a platinum ring?
Platinum jewelry should be stamped “PT” for pure platinum or “PT900” or “PT950,” indicating the number of parts per thousand that are pure platinum.
What is the hallmark stamp for platinum?
Look for the words “Platinum,” “PLAT,” or “PT” followed or preceded by the numbers “950” or “999.” These numbers refer to the purity of the platinum, with “999” as the most pure.
How can I tell if my ring is platinum?
Look on the inner shank of the ring for any detailed letters or numbers. If the shank has a visible, “PT” symbol, reads “900 PLAT”or has “950 PLAT” markings, then the ring is definitely platinum. If the ring shows a 9K, 10K, 14K, 18K, 22K, with or without a series of three numbers, then the ring is not platinum.
Are platinum rings pure platinum?
Platinum Purity & Quality Marks Platinum jewelry has a high level of purity that makes it naturally hypoallergenic and, thus, the perfect choice for people with sensitive skin. In the United States, platinum jewelry generally contains 85- to 95-percent pure platinum.
Are platinum rings 100% platinum?
Most platinum jewelry generally contains high purity levels, with 85% to 95% platinum commonly used. To put this in perspective, 18-karat gold contains only 75% gold while 14-Karat gold only has 58% gold. In comparison, platinum below 80% purity is not considered platinum.
Should platinum be hallmarked?
Items must bear a hallmark at point of sale and follow these simple rules: All silver articles weighing more than 7.78 grams must be hallmarked. All gold articles weighing more that 1 gram must be hallmarked. All platinum articles weighing more than 0.5 grams must be hallmarked.
Why is my platinum ring not hallmarked?
Platinum pieces which weigh less than 0.5 grams, 18ct Gold and Palladium pieces weighing less than 1.0 gram and Silver pieces weighing less than 7.78 grams are except from hallmark. The law of hallmark was instituted in the early 1300’s by King Edward I.
Is platinum stamped?
Pure platinum jewelry, or jewelry that is at least 50% platinum, is typically marked with a stamp (also known as a hallmark). Usually, this mark will include a number like 850 followed by “plat or “pt”, which indicates the piece is 85% pure.