Because gems and jade articles contain a lot of crystal water, the crystal water is unstable and easy to be lost due to excessive heat and light. So put a glass of water to increase the humidity in the counter and make the jade look wet (which means "good texture" in jargon).

I am a professional in gem identification, and I know more about it.

If you still don't understand anything, just go to Baidu Post Bar "Gem" and ask me! Remember to call the teacher! )