What are the identification methods for Jadeite A goods?
Jade's collection investment, first of all pay attention to "Jian", the first step of the identification is to identify the authenticity of a jade. It is generally believed that the reliable identification of jadeite A, B, C goods requires comprehensive considerations. The identification characteristics of some jadeite A goods are listed below for your reference: 1) Gloss: After polishing, the surface of Jadeite A is smooth overall, with some dents by chance, and the whole has strong rigid reflective properties, showing glass luster. The jadeite B product is soaked with strong acid and alkali, the structure is loose, the surface is dissolved and pitted, and the gel-like diffuse reflection is produced, which is a surface gloss; after filling, the surface is resin luster and non-spiritual. 2) Cui nature: Cui nature refers to the cleavage plane or crystal plane of the monoclinic pyroxene in the jadeite. The reflection of light looks like a sheet, needle or star-shaped flash. This phenomenon becomes “greenâ€. Also called fly wings. Generally speaking, the coarser the particles, the easier it is to observe the greenness. However, the jadeite of the microscopic crystal generally does not see the “cade natureâ€, so the “cade nature†cannot be used as a characteristic mark of natural jade. 3) Color: Emerald A goods are natural and layered. The color of the jade B goods is formed by the color of the original color, which is bright and yellow. Due to the destruction of the jadeite structure, the original optical properties have also changed, so the color distribution of the jadeite B goods has no layering and chaos. Some of the jade C goods are dyed, some are only dyed, some are also dyed purple (also known as "spring"), with a 10x magnifying glass (obviously even with the naked eye) you can see the dark green silk impregnated in the micropores . 4) Impurities: Jadeite A goods are magnified and observed, sometimes see yellow, brown, black impurities; jade B goods are relatively pure, can not find impurities. 5) Absorption spectrum: Various green jadeites have typical absorption spectrum characteristics. The emerald green jade must have three absorption lines caused by chromium in the red light region, and has a so-called stepped feature. Green to light green jade, the red absorption zone of the chromium absorption line may not be obvious, generally only see the absorption line of 660nm, but in the purple zone can see the 473nm absorption line, it is generally believed that the absorption line is made of Fe (iron) Caused. 6) UV fluorescence: The ultraviolet fluorescence effect of jadeite is an important reference for the identification of A, B, C goods. Natural jadeite generally has no fluorescence, and some of the "white cotton" have pale yellow fluorescence. Jade B goods, mostly filled with organic glue, generally have blue-white fluorescence (filling wax also has blue-white fluorescence), and some B goods have no fluorescence, may be filled with silica gel and other substances. Most dyed jadeites on the market today have no fluorescence (same as natural jadeite); however, some have significant fluorescence. Certain fluorescent features are of interest for identification, such as a yellow-green fluorescence that is stained with green jade, and a strong yellow-yellow fluorescence that is reddish. Through the above introduction, I believe that you understand what the jade a cargo means. In fact, in simple terms, jade a cargo means natural jade, not the grade of jade, nor does it mean good jade. Silicone Suction Cup, also known as vacuum suction cup, Vacuum Cup, Bellows Suction Cups & Vacuum Suction Pads, which are made from elastomeric material flexible & shape-changeable, and create a seal strong enough to support the required loads. Vacuum Suction Cups mainly manufactured by rubber compression & injection molding or LSR injection molding. Rubber Vacuum Suction Cup,Custom Rubber Suction Cup,Silicone Suction Cup,Rubber Bellows Sucker Xiamen The Answers Trade Co.,Ltd. , https://www.xmanswers.com