The difference between Ruan and En Zhenzhubao is that their grades are different. Generally speaking, jewelry, handicrafts or other treasures with certain value made of natural materials other than gold and silver are collectively called jewelry. There is a saying about gold and silver jewelry, and the jewelry stores that handle these items are also collectively referred to as jewelry stores. Scientifically speaking, the concept of jewelry is the same as that of gems in a broad sense. Gems in a broad sense generally refer to those materials suitable for polishing or carving to make jewelry or handicrafts.