Original title: Jade Jewelry Maintenance Jintou.com: It is understood that jadeite is also called jade jade, jade, jade, and jade. It is a kind of jade, and its color is emerald green (called Cui) or red (called 翡). It is a jade-like polycrystalline aggregate formed mainly of jade, omphacite and sodium chromite during the geological process. Emerald is a pyroxene type, monoclinic system, and two groups are completely cleavage. The main composition is sodium aluminum silicate, which is produced in metamorphic rock formation formed under low temperature and high pressure. Often associated with blue amphibole, muscovite, hard pillar (dihydrate feldspar), vermiculite and quartz. The Mohs hardness is between 6.5 and 7, the specific gravity is between 3.25 and 3.35, and the melting point is between 900 and 1000 °C. Emerald shine grease to glass luster. Transparency: translucent to opaque. Relative density: 3.30 - 3.36, usually 3.339. Refractive index: 1.65 - 1.67, there is a blurry shadow boundary near 1.66 on the refractometer. Color: The color is colorful, and the green is the top grade. According to the color, it can be divided into three types; 1, the color of the skin; refers to the color of the outermost skin of the jade, its formation is related to the later weathering. These colors are red, yellow and gray in various shades and are characterized by a nearly concentric shape near the outer skin of the material. Red is often called 翡. 2, the color of the earth: also known as the "base" color, the meaning of the background, refers to other colors than the green, the shade of white, oil, powder, gray and so on. 3, green color; refers to the true color of jade, these colors are characterized by a variety of shades of green. Sometimes green contains black. Green is often called green. Luminescence: Light-colored jade emits dim white fluorescence in long-wave ultraviolet light, and no response under short-wave ultraviolet light. Those who wear and collect jadeite should be careful not to collide and drop the jade pieces. Sometimes the surface looks like no damage, but in fact, after the collision, the internal structure of the jade has been damaged, and the dark lines are produced. Jade is very jealous of oily greasy. If it is a high-end goods that preserves value, it is not good to wear it into the kitchen to cook. Jade is also not suitable for close to high temperatures, but not for a long time. Because of this long-term, it is easy to produce physical changes and lose luster, not so bright. In addition, jadeite is not exposed to strong acid solutions, which will destroy the structure and color of the jadeite. If conditions permit, always wipe the jade with a soft cloth to keep the jewelry bright and long. Light Down Jacket,Fabric Light Down Jacket,Light Puffer Down Jacket,Mens Light Down Jacket Shijiazhuang Damei Co., Ltd. , https://www.dameijacket.com