There are many reputable jewelry brands, such as Lao Fengxiang, Chow Tai Fook, gemologist Lao Xu and Lukfook Jewelry. Lao Fengxiang and Chow Tai Fook must have often seen such jewels in the market when we were very young. These jewels have been in business for more than ten years and have good brand names. Of course, gemologists Lao Xu and Liu Fu are also excellent.