(2) Gram weight

(3) Is it pure gold or pure gold?

The engraved Pt950 shows that it is platinum, and its content is above 95%.

D0.320ct is the component of diamond.

Judging from the mark on the ring alone, it is impossible to tell the true from the false.

If you don't trust the seller, you can get it appraised by the local appraisal center.