Pc means gold! G750 is an alloy containing 75% gold, namely 18K gold. 18K platinum is 75% gold and 25% other metals added, which makes the color of the metal white. This can't be called pure gold.

Platinum is generally believed by consumers to be platinum. It is marked as PT.

The price difference between 18K and platinum is quite large, and the price of 18K is about 180 yuan/g.