Main feature recognition of Russian jade
Russian jade belongs to Hetian jade. In China, more than 98% of the tremolite components are named Hetian jade. Russian jade is produced in the Baikal area. Although it is far from Kunlun Mountain, it is still a typical nephrite system with Hetian jade, and Russian jade is mainly white jade and topaz. Russian white jade is of good quality, whiteness far exceeds Hetian jade, but it is slightly dry and the color is more uniform. Therefore, it is popular among people. It is the best substitute for Hetian jade, and it has seed material, but the white scale is thicker. The sugar color under the skin is mostly dark brown, the color is darker, and the white boundary is also clearer. It becomes the best jade material of antique jade and imitation Hetian jade. Its mining age is about the beginning of the 1990s, with an annual output of about 500 tons, second only to Qinghai jade. Russian jade is also a good jade developed and utilized in the early 1990s. It is produced in the Kunlun Mountains and extends into the remaining veins of Russia. The mineral composition and internal structure of this jade material are similar to that of Hetian jade, mainly white jade, sapphire, green white jade, jasper, ink jade and sugar jade. It is a grease-like glass luster with a slightly transparent body and a hardness of between 5.5 and 6.5. Identification of Russian jade First, from the gloss point of view, although the Russian jade is glass luster, but a little porcelain, the whole body is dry, white jade hair "dead white" light. After the grinding, it became dry from the deep white, placed on the white cloth, and it was dry in the hands. Secondly, from the perspective of transparency, the brightness of Russian jade is better than that of Hetian jade, but due to the coarser structure and lighter feel, it will turn yellow and black after wearing for a long time. At the same time, Russian jade has poor toughness, easy to start, and "crack", so pay attention to observe the cracking of jade lines. Thirdly, from the appearance point of view, the Russian jade in the light-transparent place, with a slight observation of the naked eye, can see the structure of "sharp-like", and the internal particles of Hetian jade are very small, and it is generally invisible to the naked eye. Fourth, from the jade quality, Xinjiang Hetian jade texture is more delicate and warm, and the structure is meticulous, so its hardness and density are higher. Russian jade is looser in texture and lower in hardness. Fifth, from the perspective of jade, Xinjiang is light and clean, and if the meat is fat, the Russian material looks rather awkward. Sixth, the Russian white jade texture is slightly rougher than the white jade of Xinjiang. “White†instead of “Runâ€, some will give people a feeling of “dead whiteâ€. If Xinjiang white jade is compared with Russian white jade, the former is “running†and white is delicate, while the latter is “rough†and white. Moreover, Russian white jade is prone to collapse when engraving. The color of Russian seed jade skin is relatively simple, with white and milky white as the base color. Typical colors such as tan, egg yellow and sugar color are in a piece of jade, which is presented from the outside to the inside, from the outermost grayish white to the second layer of dark brown. The sugar color then goes to the third layer of light brown sugar color, which has always transitioned to pure white. Its jade texture is fine, warm and oily. The internal small agglomerate cloud-like texture is dense and uniform, and the quality is close to Hetian seed jade. Due to the unstable tremolite content, although the inner layer of the general seed material is fine and white, it is easy to be grayed. The seeds of Hetian jade, such as gelatin, are extremely oily, and the content of tremolite is almost 99%. The texture of the cloud is short and dense, and the essence is intrinsic. The texture is warm and delicate, and the physical properties are stable. In addition, the Xinjiang Hetian jade seed jade was cut into pieces, gently tapped, and the empty sounds as the ancients said: "The sound is clear, and it will never come back again." The sound does not reach this effect and it seems dull. Air-entraining agent is mainly used for admixture compounding, which can effectively reduce superplasticizer, improve the water retention, anti-seepage, anti-freezing and pumping performance of admixture products, effectively inhibit the secondary adsorption of cement particles, and reduce the slump and slump of concrete Air-entraining Agent,air entraining agent,the use of air entraining agents in concrete NINGBO LUCKY CHEMICAL INDUSTRY CO., LTD , https://www.chinaluckychem.com