Unfortunately, you were cheated by illegal JS. I would like to remind you that the so-called 18KGP is an ornament with 18K gold plated on its surface. Generally, the surface of 18K Baidu will not exceed several microns.

And 18K is alloy jewelry with 75% gold content on the surface or base, and the other 25% is silver, copper and other metals. At least the whole jewelry contains 75% gold!

It is recommended that you identify the contents of stamps when you buy them. 18K and 18KGP are essentially different. Of course, the basic price is very relevant.

I strongly recommend a jeweler like BS. It is suggested that the media expose such a jewelry company and explode to the end!