Sufficient platinum means that the purity of platinum is above 99.9%, and there are basically no impurities. So it's called full platinum. And the purity is 99.0%, 95.0% and 90.0%, which is called Pt 990 or Pt 950 \Pt900. ..
JL is probably the brand abbreviation of some jewelry, but I can't remember what it is at once.
Just like CL is the green of Shenzhen.
Then the price depends on the market of the day. You can go to the store to ask, or you can check the market online. About 600 a gram.
Then multiply it by the weight of the ring.