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Jade identification method 1 Texture The natural jade texture is transparent or translucent, and the surface is oily and lustrous. Careful observation reveals a slightly rounded, slightly transparent "salt grain" and fibrous material surrounding it. The jade can be seen to have some fog or plaque through the light, and the glass imitation does not have these characteristics. The imitation is better than the bubble. 2 The color of the emerald structure is destroyed, and the original optical properties have also changed. Therefore, the color distribution of the B-expanded jade has no layering. Although the green color of the jade treated by this method is still the original color, it passes through the acidic solution. The soaking, the base becomes white, the green distribution is relatively floating, and the orientation of the original color is also destroyed, which looks very unnatural. 3 Hardness The hardness of jadeite is very high. Sharp tools are engraved and stroked without leaving traces. Jade can be made of glass, and it is doubtful if there are no traces. 4 After the glossy jade is soaked by strong acid and alkali, the structure is loose. Before the filling, the surface sees the dissolution pit, which makes it diffuse and the gloss becomes weak. After adding organic fillers such as resin or plastic, jade often has a resin luster, a waxy luster or a glass luster mixed with a resin luster and a waxy luster. 5 Working with a magnifying glass more than 4 times, some jade products, seed, water, color may not be very good, but the fine workmanship can also improve the collection value of jade. 6 Density, Refractive Index Bleached and filled jadeite has a majority density and a slightly lower refractive index. The density is 3.00 to 3.43 g/cm, and the refractive index is about 1.65 (point measurement). However, due to the complex mineral composition of jadeite, the density and refractive index of some natural jadeites may also be low, so the density and refractive index can only be used as reference data, and usually can not be used as a basis for judging whether jadeite is filled or not. Concentrated light flashlight: transparency magnifying glass used to observe thick jadeite: one of the instruments for magnifying and observing observation. Two-color mirror: some jadeite has chromaticity, and the best instrument for observing jade polychromaticity is dichromatic mirror refractometer : Refractive index is an important optical constant of transparent jade. It is the identification of jadeite species. How to determine the value of jadeite: refers to the density and fineness of jadeite ore: also called "head", which refers to the transmission of jade to light. And reflective color: the color of the jade is pure: what is to say is the purity of the jade: refers to the technology. Brushed Poly Fabric,Grey Polyester Fabric,Polyester Plain Fabric,White Microfiber Fabric CHANGXING YONGXIN IMPORT AND EXPORT CO.,LTD , https://www.cxyxfabric.com
