1. People who buy rings usually see some marking parameters on the inside of the diamond ring. These signs are different for different brands of clubs.

2. Usually, the common signs on the ring are: G 18K, AU750, G750, PT900, PT950, PD900, PD950, etc. These represent the material and material content on the diamond ring.

For example, G 18K, AU750 and G750 represent 18K diamond rings with 75% gold. PT900, PT950 and PT990 are labels of platinum, representing ornaments with platinum content of 90%, 95% and 99%. PD900 and PD950 represent palladium with 90% and 95% content.

What you said about the PS on the ring may be wrong. I suggest you check it again.