Coral is an organic gemstone with a pleasant color and lustrous texture, growing in the deep sea 100 to 2000 meters away from humans. Listed alongside pearls and amber as one of the three major organic gemstones, it is also listed as one of the Seven Treasures, and has been regarded as a rich and auspicious thing since ancient times.
But in fact, coral is not only red coral, according to the main components, coral can be divided into two kinds of calcareous corals and corals.
Calcium type: composed mainly of calcium carbonate, contains very little organic matter, and contains three varieties:
1. Red coral: The most common on the market, red to orange red in light to dark tones, sometimes flesh red. It is mainly distributed in the Pacific Ocean.
2. White coral: distributed in the South China Sea, the Philippine Sea, the Ryukyu Sea, etc., is white, gray, milky, porcelain white coral. It is mainly used in bonsai craftsmanship, and a few are used as processed into jewelry.
3. Blue coral: Blue, light blue coral.
corals: The main ingredient is organic matter and contains two varieties:
1. Black coral: Gray-black to black coral, almost entirely composed of matter, extremely valuable.
2. Golden coral: golden yellow, yellowish brown coral. The golden yellow coral has clear spots on its appearance.
Although corals are diverse, for now, the most popular red coral is Modi.