Why is red coral red and what color is coral red

Red coral is not necessarily a red coral.

Broadly speaking, anything with bright red color, fine texture, tough bones, and high magnesium calcium carbonate belongs to red coral. In a narrow sense, it refers specifically to a kind of gem-quality red coral that grows on the tropical seabed at 200 to 2000 meters, with deep red, pink, pink, pink, white, etc.

Why are red corals red:

Polyps use their tentacles to prey on plankton debris and obtain hornaxanthin from it, and the hornaxanthin accumulated by the polyps participates in the "biomineralization", so the tree-shaped "skeleton" formed takes on the color of hornaxanthin, and the orange hornaxanthin accumulates over time to become the current coral red.

The thin, transparent layer of coral living tissue is tightly covered by the "bones" of the coral, and the color of the "bones" is revealed through the tissue. The red color we see with the naked eye is actually the color of its "skeleton" gem coral.

Red coral is a general term for gem-quality corals, which are not necessarily all red.

In addition to preying on plankton in the sea to obtain hornaxanthin, red coral also needs to absorb a large amount of iron, manganese, magnesium and trace elements such as zinc and scandium according to its growth area and living environment, and work together to form a gorgeous and colorful color of red coral, such as white, pink, red and ox blood.

The red color of red coral is formed due to the absorption of iron oxide from seawater during the growth process of coral, and it takes a long time to form red, so-called"Millennial coral 10,000 years red"That's what it says, red coral has a calcareous surface with a vitreous to waxy luster, and is very reflective under light.

<> color is a little red, very springy, and a little orange.

The red color of red coral is due to the absorption of iron oxide from seawater during the growth process of corals, and it takes a long time to form red.

Red coral is an organic gemstone with a pleasant color and a lustrous texture, and it grows in the deep sea between 100 and 2,000 meters away from humans. Along with pearls and amber, it is listed as one of the three major organic gemstones, and is also listed as one of the seven treasures in the Oriental Buddhist scriptures, and has been regarded as a rich and auspicious thing since ancient times. Natural red coral is made up of polyps that grow very slowly and are not renewable.

The color is mainly dark red, fiery red, and pink. It is dendritic. The bones are dense and tough. It has a hardness of 4 on the Mohs scale and is opaque or translucent. The raw material has a dark luster, waxy luster after polishing, and is not resistant to acids, organic solvents and volatile gases.

1.Is red coral a red coral? Yes, of course, not necessarily.

2.Correct answer: Not necessarily.

3.Answer analysis: In a broad sense, everything with bright red color, delicate texture, tough bones, and high calcium and magnesium carbonate content belongs to red coral. In a narrow sense, it refers to species that grow on the tropical seafloor at 200 to 2000 meters.

Natural red coral will gradually grow redder and brighter after the contact friction between the sweat glands and the temperature of the human body.

In terms of the color of the coral, other conditions are similar, the darker the color, the more expensive, generally said that the ox blood color is a kind of deep red, is the best color of the coral. The lighter ones are pink and orange. If you want to refine it, sardine corals alone can be divided into 18 colors, and the color of corals is generally more orange and yellow.

The white ones are considered to be high-quality corals, while the pure white ones are the best, and the golden and black corals are also very valuable. It is generally believed that the ox blood red of Aka is the highest grade of coral.