What kind of gems does amber belong to? Amber is a resin fossil and an organic gem. It is one of the seven treasures of Buddhism. It can save money and avoid evil. Amber is a resin fossil that was buried in the ground tens of millions of years ago. After a certain chemical change, it is an organic mineral. Amber has a variety of shapes, and the surface often retains the lines that were created when the resin flowed. Bubbles and ancient insects or plant debris are often seen inside. The earliest recorded fossil resin was the Carboniferous, but amber did not appear until the early Cretaceous. The famous amber sedimentary rocks come from Myanmar, the Baltic region and the Dominican Republic. Amber is mainly the resin of ancient gymnosperms, but there are gums produced by flowering plants. Amber in the Baltic Sea sometimes contains insect or plant residues. It is speculated that the amber may have formed in the forest of the original pine species Pinussuccinifera. Holocene semi-fossil hard resins differ from amber in that they melt in organic solutions. The color is generally yellow-red, transparent to translucent. At 150 ° C, the amber will soften. High quality amber can be processed into crafts, and quality can be used as chemical materials. Amber is a product of sedimentation and is mainly produced in sediments of the Cretaceous or Tertiary glutenite and coal seams. Fushun, Liaoning, China, and Xixia, Henan, produce amber. Amber is a resin of the Tertiary Coniferous plant. It is buried underground by geological processes. After a long geological period, the resin loses its volatile components and polymerizes and solidifies to form amber. It is often associated with coal seams. Amber is a hydrocarbon containing succinic acid and amber resin with a chemical composition of C??H??O, of which carbon is 79%, hydrogen is 10.5%, oxygen is 10.5%, and sometimes contains a small amount of hydrogen sulfide. The shape of amber is mostly in the form of a cake, a kidney, a tumor, an elongated drop, and other irregular shapes. It is an amorphous body. The colors are mostly yellow, orange, brown, brown or dark red, and light green and yellow, lavender varieties are extremely rare. Grease shiny, transparent to translucent. The refractive index is 1.539 to 1.545, and there is no chromaticity. Hardness 2 to 3, density 1.1 to 1.16 g / cm?. Slightly brittle, no cleavage, with a shell-like fracture. Amber is an organic substance that softens when heated to 150 ° C and melts at 250 ° C to 300 ° C to give off an aromatic rosin odor. Amber is soluble in alcohol. Often contains insects, seeds and other inclusions. The resin is commercially collected, such as a hard resin from New Zealand's high-relief. Amber in the Baltic Sea is jeweled, while hard resin is used in the decorative industry. Spencer et al. re-examined these Coba resins from New Zealand based on samples from the New Zealand Gemological Institute and samples obtained from New Zealand coal mines. In his research, the most significant gemological findings show that the identification of the ether of coba and amber introduced in the classic gemology book is actually not ideal for Kauri resin, which means that part of Kauri Coba resin actually It is insoluble or only slightly soluble in ether. A drop of ether was added to these insoluble coba resin, and there was no reaction or slight reaction after 30 s. A drop of alcohol was added to these New Zealand Coba resin (including 25 Ma resin), and all of the reaction was dissolved in alcohol after 30 s: surface It is sticky or opaque, while the real amber drops on alcohol and there is no reaction at all, indicating that it is insoluble in alcohol. Coba resin is also prone to alcohol-like dissolution in glacial acetic acid, but glacial acetic acid can cause irritating odor and may cause burns to the human body, so it should not be used as a gemological test method. In addition, his tests also showed that the reaction of natural coba resin under ultraviolet fluorescence is unstable, and this test is difficult to be used as an identification basis for identifying amber and coba resin. Seim-Dull Chip Sd,High-Strength Semi-Dull Chip,Pet Semi-Dull Chips,Technical Polyester Pet Chip Zhejiang Jiabao Polyester Co.,ltd. , https://www.jiabaorecycle.com