It's dangerous. You'd better go to the jewelry appraisal center for appraisal. It won't cost much. Maximum inspection fee 100. What you're talking about is that kind of crystal landscape stone. There are many merchants in China who cheat behind the landscape stone as they told you. They usually buy very transparent artificial crystals and paste a prepared background on the back. This is not authentic. I suggest you go to the local jewelry appraisal center for appraisal. Your appraisal fee should be around 50 yuan. It usually costs 20 yuan for an appraisal in Beijing, and 20 yuan for Guangzhou, which is estimated to be the same price there. Identify it. Don't worry, fake goods must complain. We can't let this illegal business continue to harm society.