Nanhong is distinguished from other agate, chalcedony, quartz stone, and related silica derivatives in the red part of Nanhong, commonly known as "meat." "Meat" is also a unique concept of Nanhong, which is a common name in the industry. The academic aspects such as general jewelry identification will not use this title. To understand this part, we need to introduce a concept called "ice", which is a characteristic of the southern red quartz stone. Then, the opaque part of the transparent or translucent quartz stone, that is, the color-forming substance is the concept of "meat" that we want to talk about. The higher the saturation of the color-causing substance, the lower the transparency of Nanhong and the more full the “meatâ€. If you follow the scientific and rigorous attitude, you can't say that the meat is 100% impenetrable. Because 100% is not transparent, this mine does not contain quartzite, this mine is not south red. In the industry, “full meat†means that the saturation of the coloring mineral is close to 100%. Two criteria: the saturation of the color-forming substance and the color redness of the color-causing substance. The same redness, the difference in saturation will be a big difference in price. Saturation of the color-causing substance: The higher the saturation, the more "meat" is, the better the quality. The degree of redness of the color-causing substance: the more red, the better, that is to say, the "color difference is one point, the price difference is a hundred times." The red coloring material of Nanhong is composed of hematite, goethite, and other trace minerals. Therefore, the redness of Nanhong is composed of a variety of coloring mineral elements, resulting in uneven redness. South red jade: I often hear such praises as Nanhong, "Jade is warm and delicate", "body is like gelatin, fine and restrained, thick and warm, and the pulse is tight." These words all describe the redness of Nanhong. Jade, mainly refers to the photo-deflection effect and permeability of a piece of jade crystal particles and crystal structure. What kind of South Red Agate is good? The smaller the crystal particles, the tighter the structure, the better the jadeness and the smaller the stoneness. Conversely, the larger the crystal particles, the looser the structure, the greater the stoneness and the worse the jade. In general, the south red material with good jade quality is warm and delicate. Judging from the origin of Nanhong, according to the order of the strength of jade, Baoshan South Hongyu is the best, followed by Liangshan Nanhong. The Baoshan South Red Minerals are multi-cracked and cannot be avoided during processing. Only weakened jade can be used to conceal. In the process of Baoshan Yaguang processing, the jade will gradually emerge in the process of playing, and the color will become more and more red. Compared with Baoshan material, Liangshan Nanhong mineral material is heavier in stone quality, and polishing can cover stone and enhance jadeness. The particles on the surface of jade are polished into mirror surface to make the light folding effect uniform and uniform, and add beauty and jade texture. Therefore, Baoshan South Red is often processed into matt, or natural light, while Liangshan South Red throws high light. The comparison of Baoshan Minerals and Liangshan Minerals here is that the specific mines cannot be generalized. For example, in the south of Liangshan, the jade of the Vaisi material is also very good. It is more than the Baoshan material, and can be compared with the fat white jade in Hetian jade. The Dongshan material of Baoshan is too dry, and the jadeness may not be as good as that of Liangshan Nanhong. Spandex Polyester Velvet Fabric
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