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The jade oil cyan has the original color and the secondary color. At the same time, there are natural oil cyan and artificial oil color cyan. How can we correctly distinguish them? Xiaobian will introduce you how to identify the oil and green jade.
The difference between the original oily cyan jade and the secondary oily cyan jade;
In oil green jade, there are primary oil cyan and secondary oil cyan. The original oil cyan jade is composed of pyroxene minerals such as iron-containing omphacite. Due to Fe2+ coloration, green tends to be grayish and dark. Thus, the oil cyan color is reflected. The secondary oil cyan color is mainly formed by the infiltration of some chlorite clay material along the jadeite jade and micro-cracks that make up the jade. Due to the different color causes, the value of the two is also There is a clear difference, the original oil blue jade is a medium-grade high-grade jade, the price is high; and the secondary oil-blue jade is a medium-lower-grade jade, the price is relatively low. How to distinguish between the two?
The difference between natural oil green jade and imitation oil green B+C jade;
The original oil cyan color is the color of the omphacite mineral containing iron in the jade. The color is even and soft. The color tone of the transmitted light is blue-green, and it will not diverge and fade. In the original oil-blue jade, the price is relatively high. It is ice oil jade, that is, jade with oil cyan, texture above the ice, often delicate texture, uniform color, will show a soft "fluorescence" under the light.
The difference between natural oil green jade and imitation oil green B+C quartzite.
Secondary oil cyan is not the color of the minerals that make up the jade itself, but is formed by the foreign matter in the mineral gap and micro-cracks, and the color boundary is obvious. However, under the transmission light, the color diverges, becomes shallow, and has no color root. It is a wire mesh, and the boundaries are also blurred, reflecting the characteristics of "seeing light death."
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