Jewelry has a broad sense and a narrow sense. Jewelry in a narrow sense refers to jade products, while jewelry in a broad sense should include jewelry, handicrafts or other treasures made of gold, silver and natural materials (minerals, rocks, organisms, etc.). ) and has certain value. Therefore, the ancients said that there were gold and silver jewelry, which distinguished gold and silver from jewelry.

With the development of social economy, the concept of jewelry should be extended to include gold, silver and jewelry besides natural gems and artificial products. The industries dealing in these commodities are collectively called jewelry industry. The scope of jewelry is far greater than the broad concept of gem. Gems in a broad sense generally refer to those raw materials suitable for polishing or carving into jewelry or handicrafts.