As for the quality, I don't feel very good. Matte's ring is very bright now, and the necklace (above 1 10) is more exaggerated, discolored and black. My neck is allergic. I went to the shopkeeper and said that there was something plated outside, and I had to go back to the factory to dismantle it. It was particularly ugly after dismantling it.
The usual free cleaning is to put it in a small cup and rinse it clean.
You'd better look around more.
2, you should still trust the mall, but you'd better pay attention to whether you are allergic.