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Is quartzitic jade jade?

Yes.

Quartzite jade is a dense mass composed of granular quartz aggregates with a quartz content of over 90%. In addition to the main component of quartz, it often contains chromium mica, sericite, lithium mica, hematite, blue amphibole and other minerals. When the quality is pure, quartzite is white, hardness is 7, hardness and emerald comparable to the density of 2.65 or so, refractive index of about 1.54, glass luster.

Because of its dense and delicate texture, beautiful color, high hardness, height, good luster, good polishing performance, and a certain degree of transparency, quite popular with jade lovers, coupled with the richness of the origin, and thus the market is more common, belonging to the middle and high grade jade materials. Jade from Xinjiang is white in color and is called Xinjiang White Jade. Those from Myanmar are similar in color to jadeite and are called neo-cui.

Expanded:

1. Quartz lithic jades are a type of metamorphic rock with a quartz content of more than 85%, generally made from sandstone or Other siliceous rocks through regional metamorphism, contact metamorphism or gas-liquid metamorphism recrystallized and formed. The main mineral is quartz, generally light-colored or white, dense and hard, but its particles are often formed into dense blocks, which is not easy to distinguish by the naked eye. Quartzite is generally blocky structure, granular metamorphic structure, also contains a small amount of feldspar, sericite, hornblende, pyroxene, etc., with a variety of colors, high hardness, can be used as a building material or railroad track laying stone. The pure color particles are delicate can be used as raw materials for crafts carving.

2, different origins, quartzite jade texture, color often have different characteristics. According to the place of origin, it is divided into the following varieties:

Beijing White Jade

It is a kind of dense quartzite with pure white color and fine texture, and was named after the discovery of it in the Xishan area of Beijing in the 1960s. Later, similar white quartzite was found in Hunan and other places. In order to unify the name, some experts suggested using the name "Jingbaiyu" to indicate the characteristics of quartz, which is used to include the white quartzite jade produced in various places.

She Tai Cui

A kind of jade from Inner Mongolia was mined only in 2007, and was officially named "She Tai Cui" by well-known experts in China's geology and stone jewelry industry in 2008. It is understood that "She Tai Cui" was formed 1.8 - 2.4 billion years ago, is the Chinese jade species in the jadeite varieties, and jadeite have similarities. The narrow sense of Shetai Cui mainly refers to the production from the town of Ulat Qianqi big Shetai jade mine, emerald green, white, green three basic colors.

Mishan Jade

Named for its production in Mixian County, Henan Province, it is also known as "Mixian Jade", "Henan Jade", "Henan Jade" and "Henan Jade". The quartz particles in Mishan Jade are so small that it is difficult to recognize them with the naked eye, making it as delicate as nephrite. It is often slightly transparent to translucent. The colors of Mishan Jade are mainly green and reddish-orange, but green is the main color.

Gui Cui

Produced in Dafang, Molong County, Guizhou Province. It is a kind of fine-grained quartzite jade containing kaolinite quartz. It is mainly light green with a bluish-gray hue, but green is also seen, hence the name Guicui, or "Guizhou Jade".

New Jade

Produced in Myanmar, Myitkyina, tens of kilometers of mountainous areas, the pit is located at an altitude of more than 2,000 meters in the hillside area, the more famous are the Maung Pao mines, the quality of the material is often crystalline green or white-green, but also see reddish-yellow varieties, the specific gravity of the majority of the 2.0-2.3 between the molar hardness of 7 or so.

Dongling Stone

Originally, it refers to a kind of green quartzite jade produced in India, and is thus also called: "Indian Jade". Because the jade contains filigree green chrome mica scales, making Dongling stone has a kind of star-spot shining feeling, and the color is bright, for emerald green or green with blue tint, very beautiful.

Tianshan white jade

Produced in the Tianshan Mountains, belonging to the quartzite also known as Tianshan white jade, hardness of 7, hardness and jadeite equivalent, beautiful jade, acid and alkali resistance, do not fear of sweat and dirt, white and clear, suitable for statues of Buddha and pendant bracelet carving. Because of its origin in Xinjiang, it is also known as Xinjiang White Jade, and was discovered in the Tianshan Mountain area of Xinjiang in the 1980s. Because this area is located in the Tianshan Mountain range, the quartzite jade produced in this area is also known as Tianshan Ice Jade or Tianshan White Jade.

Tuojiang Dachan Jade

Also known as Dachan Jade, Janghong Jade, Tuojiang Jade, Dachan Seed Jade, Tuojiang Water Jade, Tuojiang Colored Jade, and Yangtze River Sisters' Jade, it is the collective name for the various kinds of seed jades produced in the Tuojiang River Basin in Sichuan Province. Because the Tuojiang River originates from the Jiuding Mountain in Maoxian County, Sichuan Province, it has many tributaries and variations; it produces a wide variety of jades in a wide range of colors; coupled with the fact that the main stream of the Tuojiang River passes through the Zizhou (now Ziyang area in Sichuan Province and Neijiang area in Sichuan Province) where the famous minister of the Eastern Zhou Dynasty, Averman Hung, was exiled from the ancient land of Shu, as well as the Neijiang City in Sichuan Province, which is the hometown of famous master of Chinese painting Zhang Daqian, the jades produced in the Tuojiang River are also honored as Janghang and Daqian Jades by the jade and stone players.

Taiwanese Jade: It is a blue quartzite, so named because it is produced in Taiwan Province.

Langya Jade: It is a kind of quartzite with grayish-white and brownish dense color. It is produced in Tancheng County, Shandong Province.

Cinnabar Jade: It is a kind of quartz vein containing cinnabar. As the cinnabar is very fine and evenly distributed in the quartz veins, it gives the jade a delicate purplish-red and bright-red color mass. It has a hardness of 7 and a density of more than 3. It is mostly opaque and can be used for jewelry and jade carving. It can be used for jewelry and jade crafts. Cinnabar Jade is also known as "Peony Jade".

South African Emerald: A green quartzite jade, named after South Africa. The texture is translucent and rounded, and the best emeralds can fluoresce as gemstones

References:

Baidu Encyclopedia: Quartzite Jade