Pd is indeed palladium. As for its price, you can get it through Baidu search, which is better than Huang Jingui anyway.

In addition, popularize the knowledge of precious metals: Pt is 990 and 950 (meaning that the content of platinum in jewelry is 9.9 million or 995 million).

Au is gold, and the common colors are 999, 990 and 750. (Same as above, the figures at the back indicate that the gold content of jewelry is 999,990,750/10000).