2. Look at the color. The color of red coral is bright red, whether it is shallow or deep, it is alive and immortal! And red coral has bright waxy luster, while dyed red coral has no luster and its color stagnates.
3. Listen to the sound. Corals look fragile, but when they collide with each other, they make a crisp and tough sound. Generally, plastic or other imitation corals will not have such a hard and brittle sound. This kind of sound is especially obvious on dendritic corals!
Red coral has some natural defects, such as pressing lines, black spots, white spots, trachoma, bug eyes and so on. Although it is a coral defect, it is also one of the important signs of red coral identification.
Real coral beads:
False coral beads:
Extended data:
The individual color of coral is gorgeous, and the gorgeous color is not inferior to all kinds of flowers on land. Some coral species also have amazing fluorescent effects. Different kinds of corals can build a solid coral reef ecosystem in the aquarium, which makes corals have great competitiveness in the aquarium industry.
Coral instruments can detect authenticity. The density, hardness and refractive index of red coral are all measured by scientific instruments. The density of red coral is 2. 16~2.70g/cm3, the refractive index is 1.65, and the density of black coral or gold coral is 1.30~ 1.50g/cm3. As for imitations such as reef-building corals, the density and hardness are lower.
Identification between natural coral and imitation: Coral imitation commonly includes dyed marble, red glass, red plastic and "gilson Coral" made of calcite powder and dye. None of these imitations have the internal structure of natural red coral.
Baidu encyclopedia-coral
China Economic Net —— Identification from Getting Started to Mastering Red Coral