We often see certain markings engraved on jewelry pieces when we go shopping. But very few people know about them. One frequently asked question is what does plat indicate on a ring.

If you are one of those people who are unaware of the meaning of plat on rings, then this article will answer all of your queries. 

Plat stamped on a ring indicates platinum. This indicates that the ring is an alloy of platinum incorporating at least 950 parts per thousand (ppt) of platinum. 

What is the mark for platinum on a ring?

Mark for platinum used by the jewelers is either plat or pt followed by the numbers 950 or 999. These digits denote the number of parts per thousand that are pure platinum. 999 is considered the purest platinum.

What does the hallmark plat mean?

Platinum has been considered a precious metal for fine jewelry since 1975. As it was required that all the pieces having more than 0.5 grams of weight should be hallmarked according to the new hallmarking Act. 

The hallmark plat suggests that the jewelry piece contains at least 95% pure platinum and is 950 of 1000 parts pure. 

How can you tell if platinum is real? How much is it worth?

Platinum is a unique and valuable metal and is metallic white to a silver-gray color. Many scammers sell fake pieces calling them real platinum.

So, if you want to check the authenticity of platinum you must look for the hallmarks plat, pt, and platinum. These are often preceded by the numbers such as 950 or 999 referring to purity.

Therefore, if we come across a ring engraved with PLAT999, it demonstrates that it is authentic. 

Platinum is normally valued higher than gold. It is purer and has a higher density. Platinum rings require more platinum content as compared to gold rings so, it raises the overall price of platinum jewelry. Platinum is worth $30.08 per gram and $1,023 per ounce today. 


After reading this article you will be able to distinguish between real and fake platinum rings. Rings composed of pure platinum have markings such as plat and pt with numbers 950 and 999. 999 indicates that the platinum used in making the ring is pure.

Check out our article on How Much Is Swarovski Jewelry Worth?

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