Red coral is an organic gem, which grows in the deep sea from 0/00 to 2000 meters away from human/kloc-. It is listed as three organic gems alongside pearls and amber, and it is also listed as one of the seven treasures in the Oriental Buddhist scriptures.
Natural red coral is formed by the accumulation of coral polyps, which grow very slowly and cannot be regenerated. However, red corals only grow in several straits (Taiwan Province Strait, Japanese Strait, Baltic Strait and Mediterranean Sea) and are restricted by sea areas, so red corals are extremely precious.
Extended data:
Coral species
1, dead coral, has completely stopped growing, with serious damage and many holes.
2. The upside-down coral has basically stopped growing, and the damage degree is not great.
3. Living coral, which can continue to grow on the seabed, has a film on its surface, which is dazzling and exquisite after polishing, and is the most precious among red corals.
Red coral has many colors, such as crimson, flesh red, pink, orange, milky yellow, milky white and so on.