The following picture is a real snow clam picture!
The real origin of snow clams is Changbai Mountain in Northeast China. I don’t know if this snow clam of the poster is the other snow clam, you will know by looking at the picture. In addition: the price of snow clams will no longer reach 30 yuan/gram.
It would be better for the poster to post a picture so that everyone can identify what he bought. I really can’t tell from what you said. Also, I have never heard of snow clams being produced in Qinghai.
If you still have any questions about snow clams, you can call me on Baidu HI or 992952223 Oukou.