First of all, your ring has a national inspection certificate, and the quality should not be a problem (unless the certificate is fake). You can also see for yourself whether there is a Pt950 mark on the ring.

Then, the color of platinum itself is white, and its physical and chemical properties are extremely stable. Only aqua regia and heated sulfuric acid can move it. As for platinum 950, the content of platinum is 95%, and 5% is other metals. This 5% may change the color of the ring, but the possibility is very, very small.

Then, the main problem of changing the color of platinum ring is the time to wear it. It may be that it touches or absorbs oil when wearing it, and sticks to other things when exercising or carrying it. But these are usually washable.

You can try. Squeeze some toothpaste and wash it with a cloth and a little (not too much) detergent.

See what has changed. . ? Then go to the merchant.

Suggestion: Jewelry should be stored separately at ordinary times.

I hope I can help you! )