If you don't know jewelry, then I believe you must know Ruan. Jewelry is Ruan's sub-brand. Their current products are mainly colorful treasures, jade, pearls and the like. However, the selection of materials and workmanship are very fine. If you look closely, you will think it must be a master craftsman. I'm not bragging, otherwise people will think I'm here to advertise. I'm just saying my own opinion.