1 look at the texture Red corals have longitudinal lines parallel to the direction of coral growth and are arranged more closely. Outside the cross section of the red coral, there is a ring like the annual ring of the tree, so pay attention to the two textures when identifying the naked eye. 2 see color The color of red coral is a vivid red, whether it is shallow or deep, it is alive, not dead, not stagnation! And the red coral has a bright waxy luster, while the dyed red coral has no luster and the color is stagnation. 3 listening to the sound Real corals look delicate but have a crisp, tough sound when they collide with each other. Generally, plastic or other fake corals do not have such a hard and crisp sound. This kind of sound is especially evident on the dendritic coral! 4掂 weight Coral has a good sense of weight, and it is generally placed on the palm of your hand to give people a heavy sense of inconsistency with their delicate feelings. This weight is also one of the basis for identifying red corals and some inferior counterfeits! 5 Identification of natural corals and stained corals Dyed corals are usually dyed with red and other colors of white corals with organic dyes. The distinguishing feature is that the dyes are enriched in the cracks, and the internal color is dark and the internal color is shallow. The surface is different. The cotton sticks with acetone are used. Being dyed. 6 Identification of natural corals and imitations Coral replicas are commonly found in dyed marble, red glass, red plastic, and "Gilson Coral" made with calcite powder and dye. These imitations do not have the internal structure of natural red corals. They can be distinguished by careful look at the grain; dyed marble granular structure, dyes are enriched in mineral particles, and the test can be done with acetone; red glass can be done very much. Similarly, occasionally see bubbles, from the hardness point of view, the glass is larger than the coral, and does not react with hydrochloric acid; the density of red plastic is generally less than 1.55, heating and taste, and can not react with hydrochloric acid; and the density of Gilson coral is 2.45. Men's Clothing ,White Undershirt,Long Sleeve Tshirt,Hoodie Jacket For Men Ningbo Liyuan Garment , https://www.liyuangarment.com