1, rarity: Red coral is a kind of coral, a marine organism, which grows in the deep sea, so its rarity is very high, while cinnabar is a sedimentary rock ore composed of minerals, which is relatively common.

2. Artistic value and historical value: Red coral is a precious material with a long history, which is widely used to make jewelry and handicrafts, such as necklaces, bracelets and earrings. Its unique color and texture make red coral have high artistic value, while cinnabar has a certain historical position in China traditional culture and is widely used in seal making and artistic creation, but its artistic value and historical value are relatively low.