Generally speaking, jewelry, handicrafts or other treasures made of natural materials (minerals, rocks, organisms, etc.). ) gold and silver and items with certain value are collectively referred to as jewelry, so there is a saying of "gold and silver jewelry", and jewelry stores that operate these items are also collectively referred to as "jewelry stores". Scientifically speaking, the concept of "jewelry" is the same as "gem" in a broad sense. Gems in a broad sense generally refer to those raw materials suitable for polishing or carving into jewelry or handicrafts.

Gems in a broad sense generally refer to those raw materials suitable for polishing or carving into jewelry or handicrafts. Yuyuan Garden and Jewelry are the most comprehensive and numerous jewelry collection websites at present. Jewelry generally includes: natural jewelry jade (natural gemstones, natural jade and natural organic gemstones), artificial products (artificial gem, recycled gemstones, assembled gemstones and synthetic gemstones), and precious metals for jewelry: gold, silver and platinum.

If a gem is not beautiful, it can't be a gem. This kind of beauty is either colorful, transparent and clean, or has special optical effects (such as cat's eye, color change, night light, etc.). ), or have special patterns (such as chrysanthemum stone, agate, plum blossom jade, etc. For example, diamonds with few defects can be polished into precious diamonds, while those with poor transparency, many defects and black color can only be used as industrial raw materials.