宝石鉴赏（Gem appreciation）.doc

宝石鉴赏（Gem appreciation） What is the pulp of the stone is a kind of quartz Two. Crystal, diamond index? Crystal refractive index 1.544-1.553; The refractive index of diamond is 2.417/2.24 The refractive index is 2.417 and the dispersion medium is 0.044. Homogenate. The thermal conductivity is 0.35 calories per second/SEC. Three. Should be labeled when the jadeite is sold? Indicate B goods or injection jadeite 4. Hardness of yingshi mine: mohs hardness Hm = 4 The kunlun mountains, which are distributed in the south of tarim basin, are found in xinjiang and tiantian The main producing area of xiuyu is liaoning xiyan county, which is also produced in guangdong xinyi and sichuan The origin of the dushan jade? It is produced in nanyang, henan What are the characteristics of pearls? Luster, cuticle, shape, size, color, category, material composition slightly different. What is the main method of diamond color grading? The method of colorimetry requires first to establish a complete set of diamond standard colorimetric stone, which will be measured against the diamond in the specified environment, so as to determine its color grade What is agate? Agate is a crystal, but belongs to cryptocrystalline structure, crystallization is too small and difficult to observe. Agate is a kind of chalcedonic mineral, often mixed with the texture of opal and cryptocrystalline quartz, with a hardness of 7-7.5 degrees, a weight of 2.65, and a very high level of color. Translucent or opaque. Used to make decorations or to enjoy. Ancient burial objects often can be seen in clusters of agate balls. What is the color of malachite caused by? Copper oxide produces copper oxide, and the whole rock is dyed green Malachite is a carbonate mineral containing copper, hydrated base carbonate [Cu2 (OH) 2CO3 or 2CuOCO2H2O] What color is sapphire? alumina 11. The emerald color of Charles green underground? Under the Charles filter, most emeralds will appear due to the presence of chromium ions Now dark red,