To protect American consumers, a high-content platinum alloy will be marked 950Pt, 950, plat or platinum, meaning that it’s at least 95% pure, elemental platinum. It’s also the only platinum alloy that can simply bear the “Platinum” stamp to identify that it’s 95% pure platinum.

What does PT950 mean?

platinum 950
What does PT950 and 18 kt mean on a ring? A. PT950 means that the ring is platinum 950 — meaning it’s 95% platinum, the standard used in fine jewelry. 18kt means a ring is 18kt gold.

What are the markings for platinum?

Find any marks indicating platinum jewelry. 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. For example, an authentic piece of platinum jewelry might have a stamp reading “PLAT999.”

What does P45R mean on a ring?

Unidentified Stamps

What metal is marked 950?

Platinum
950 Platinum Pieces marked with a 950 purity are a blend of 95% platinum and 5% alloy metals (usually ruthenium , copper, cobalt, iridium, rhodium, or palladium).

Can platinum be worn everyday?

Platinum is extremely durable and strong making it ideal for jewellery that’s worn on a daily basis. It’s highly resistant to stress and withstands both extreme heat and extreme cold, which means platinum jewellery will retain its good looks better than any other metal.

Why do they put 950 on a platinum ring?

The number 950 often follows the PT abbreviation, because for alloys of platinum between 850 and 950 parts per thousand, the word “Platinum” must be accompanied by the purity. Platinum is very dense and consequently weighs more than gold.

What does PT mean on a platinum stamp?

The stamp PT is an abbreviation for platinum, and PT950 refers to the number of parts per thousand that are pure platinum. Platinum alloys are about 90 percent to 95 percent pure; therefore, a higher percentage of an item’s weight is made up of the metal.

What do the letters on a platinum ring mean?

If letters are given, they will say either PT, PLAT, or PLATINUM, which indicates that the ring is at least 95% platinum. In the U.S., the number given before or after these letters can be 850, 900, or 950.

What does the p mean on a 18K gold ring?

18k is .750 (75% gold). When you see KP stamped inside your ring, which is a “P” at the end of the stamp, like: 14kp, that means that the gold is “ Plumb ” which means it’s verified to be at least that karat weight marked or more. So if it’s 14kp, it’s at least 14kt gold or higher! Platinum can be written as platinum, plat, 900 or 950.