Quartzite is a metamorphic rock with a quartz content greater than 85%. It is generally formed by sandstone or other siliceous rocks undergoing regional metamorphism, contact metamorphism or gas-liquid metamorphism. The main mineral is quartz, which is generally light or white, dense and hard, but its particles often form a dense block, which is not easily distinguishable by the naked eye. Quartzite is generally a block-like structure with a granular crystal structure. It also contains a small amount of feldspar, sericite, amphibole, pyroxene, etc. It has various colors and high hardness and can be used as a building material or a railway track. The fine color particles can be used as raw materials for handicraft carving.
Quartzite jade price
Quartzite jade is mainly composed of SiO2, and its jade varieties are numerous, such as Dongling Stone, Miyu, Guicui, Qiu Taicui, Jingbaiyu, and the very hot Huanglongyu and South Red Agate on the market in recent years, many of which are named after the place of origin. According to the relevant requirements in the national standard GB/T16552-2010 "Jewelry and Jade Name", such names do not participate in the name.
Quartzite jade is a metamorphic rock with a quartz content greater than 85% formed by regional metamorphism or thermal metamorphism. It is called quartzite jade when its quality meets the requirements of arts and crafts. Quartzite jade is a medium- and low-grade jade with large output and low price. It is commonly used as Hetian jade, jade and water foam.
The high-quality quartzite jade has been loved for many times because of its "warm and condensed texture, tough and compact structure, rich colors, high hardness, stable physical and chemical properties, exquisite and excellent processing performance and preservation value." The enthusiasm of the jade people was so hot that the price was soaring.
Quartzite jade identification
The quality of quartzite stone is mainly evaluated from the aspects of texture, color, transparency, impurities, cracks, etc. Usually, the jade is fine, dense and uniform, the color is bright and uniform, and it has certain transparency. It is less visible or less visible to the naked eye, and has less impurities and cracks. It is better.
Among them, the green variety is better, in addition to the pure purple quartzite jade and the fine white Yingyu jade is also the top grade.
A cargo quartzite jade refers to quartzite raw materials or finished products whose internal and external structures are not destroyed without any manual treatment or only wax impregnation; B-commercial quartzite jade refers to quartzite raw materials treated by pickling and filling Finished product; C-package quartzite jade refers to the quartzite raw material dyed with dye or its finished product; and quartzite wax can reduce the graininess and enhance the transparency, so it is almost in every sample as an optimization method.
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