1, the collection value is different. The relief shell carving is hand-carved on the shell, which is called the western jade carving. It once prevailed for a while and has more collection value than agate.

2. Different artistic values. Among the major museums in Europe, the relief shell carving is an important collection of jewelry, and the relief is more artistic than agate, and its unique micro-carving technology is enduring. Cameo, the Chinese transliteration of CAMEO, is a kind of bas-relief commonly used in artistic creation and jewelry making, which usually highlights the main body by using the color difference between the bottom surface and the carved surface.