Sapphire is the largest component of nephrite. Its material composition is the same or similar to that of white jade. The cause is the same as that of white jade. It is a cause of contact metamorphism. It is only due to the trace element iron. Among them, some of the sapphire has a stronger interweaving structure and better toughness.
Sapphire contains a wide range of varieties, from blue and white to dark dark green, the color span is large, but also because of this color span can be subdivided into white jade, sapphire, green and green color is also known as green jasper. Sapphire is the highest hardness of nephrite, also known as steel jade, but the color is not as good as white jade.
Qingbaiyu: Between the jade and the white jade, a lot of good white jade, not carefully identified, really thought it was white jade. From the perspective of engraving, there are several nouns, "Haipai, Sugong, Yangzhou workers...", and many of them are Fujian workers. Fuzhou is famous for wood carvings and lacquer wares. Because Fuzhou Lianjiang Luoyuan is rich in Shoushan Stone, Stone carvings will not be bad.
Sapphire thin tire pot
In addition to the so-called sapphire and blue and white jade, there are some special sapphire varieties in Xinjiang sapphire, which deserve special attention from collectors. For example, there is a kind of green jade jade, its color is actually black and green, but when viewed from the outside, the color is black, and only under the strong light, the cyan is clearly visible. The internal structure of this jade seed jade is fine and uniform, showing a very good jade texture. Rare materials like this have not been valued in the collection industry, but as their knowledge has improved, their value has been greatly improved and they are valued by collectors.
In addition, Qinghai Sapphire, which has been widely developed and utilized, is also a very good variety. Qinghai Sapphire has the characteristics of uniform texture, uniform color and fineness, and is especially suitable for large jade carving vessels. Objectively speaking, the emergence of such a batch of sapphire provides a very good raw material for the production of contemporary jade, adding an opportunity to create a new jade carving with the characteristics of contemporary arts and crafts. However, since it was discovered that it was not recognized, the Qinghai sapphire was cheap, so there was a wasteful use, and it was developed in just a few years. With the reduction of raw materials, the rareness of Qinghai sapphire has become increasingly apparent, starting from a few dollars a kilogram to the current thousands of dollars a kilogram. But unfortunately, the material loss caused by the deviation of the understanding of the sapphire and the undervalued value can not be remedied.
The directionality of the collection of sapphire works is the pursuit of works with good jade and jade. Although there is no white jade in the value of wealth, such works still reflect good ornamental value.
Sapphire and Jasper
Although the same as the tremolite jade, but the difference between the cause of jade and jasper, not only the difference in color, from the outside, the color of jasper is mainly grass green, while the sapphire is grayish green and black and green, jasper usually With black spots, and sapphire without black spots.
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