How about Sheng Yuan jewelry brand?
To tell the truth, many Taobao stores were private in the past, and their trust was not high, because fake sales could run away in a short time, but now many of them are sold by enterprises, which need long-term development, especially those big brands, and others will not casually smash their own brands. Some time ago, I bought myself a pearl pendant on Valentine's Day. Beautiful, with a certificate. I recommend it to you. It's called Sheng Yuan Jewelry. I started to compare many manufacturers. This shop is very good. If you are not sure, you can keep asking me. Can you also ask me to buy a garnet bracelet? I like it, too, and I have research. I am very cautious about shopping.