Xinjiang has a long history of producing gemstones and is known as the “Hometown of Treasures and Jade”. Known as the "Jade of Kunshan", Hetian jade is famous both ancient and modern. It is well-known both at home and abroad and is very popular in the gemstone market. However, in the depths of the Tianshan Mountains in Manas County, Xinjiang, Xinjiang, it is also rich in jasper, also known as "Tianshan Jasper" or "Manas Jasper". The biggest feature of Manas Jasper is the green color, which is mixed with a bit of shape and strip-like pale white markings. There are black ink spots in the jade, and the ink spots are large. It may be due to the density and the question of the structure, a waxy luster appears on the appearance.

Manas jasper quality technical requirements I. Raw material requirements (1) Raw material production requirements. The raw materials are produced in the area of ​​Manas County, Xinjiang Uygur Autonomous Region, north of the Tianshan Mountains, 43°34' to 43°42' north latitude and 85°43' to 86°04' east longitude. (2) Classification and characteristics of raw materials. 1. Native mineral material: commonly known as “mountain material”, it is angular, with sharp edges and different shapes. 2. Secondary mineral materials: There are two types of mountain water and material. The water flowing from the mountain stream is sub-angular, the block is large, the edges are slightly rounded, and the surface is smooth. The sub-materials are round and round, with roundness and smooth surface, and the surface can have different colors. . (3) Characteristics of raw materials. Appearance features are opaque to translucent, common colors are light to dark grayish green, green, turquoise, dark green, tan - maroon (sugar). Second, jade mining and production process: mining → material selection → finished product production → jade jade → polishing. (1) Mining: 1. Primary mineral material: According to the structure of the rock formation of the mine, the surrounding rock is stripped, and the jade ore belt is stripped out and then manually excavated and screened. The mining shall be approved by the local government department, and after being examined and filed by the relevant departments, the enterprise legal person who has obtained the mining license of the Manas jasper mineral resources shall be mined according to law. 2. Secondary mineral materials: manual mining and screening. Jade is derived from the origin of raw materials. (2) Material selection: Judging the type and quality of jade according to the indicators of texture, color, gloss, transparency, hardness, blockiness and shape, and determining what products to make. (III) Production of finished products: designing shapes and drawing shapes according to the characteristics of jade materials. (4) Saitama: through artificial or engraving machine equipment. (5) Polishing: The surface of the jade is ground to make it smooth and bright. Third, the quality characteristics (a) sensory characteristics. The polished surface is glass luster to grease luster, slightly translucent to translucent, tough texture, strong color, uniform to relatively uniform, light green, turquoise, dark green, dark green, etc., some have sporadic black spots in the body. (2) Mineral composition. The main mineral component is tremolite. (3) Material properties. Chemical composition: Ca2(Mg, Fe)5Si8O22(OH)2 Crystallization state: microcrystalline-cryptocrystalline aggregate, often a fibrous aggregate. Mohs hardness: 6 to 6.5. There will be some changes due to the difference in structure. Density: 2.95 (+0.15, -0.05) g/cm3. Refractive index: 1.606 ~ 1.632 (+0.009, -0.006), point method: 1.60 to 1.61. Absorption spectrum: Absorption lines are rare, and the visible absorption line is visible at 500 nm. The high-quality green jasper has a fuzzy absorption line in the red area. (4) Quality level. According to the texture, it is divided into: special grade and excellent grade. 1. Special grade: The color is rich and uniform, and it is pure green. The structure is dense, delicate and moist. Transparency and purity. 2. Excellent grade: the color is rich and uniform, and it is pure green. The structure is dense, delicate and moist. Transparency and purity are good. (5) Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

Apply to：
Producers within the Manas jasper production area may apply to the Manas County Quality and Technical Supervision Bureau of Xinjiang Uygur Autonomous Region for the use of the “Special Mark for Geographical Indication Products”, which is reviewed by the Xinjiang Uygur Autonomous Region Quality and Technical Supervision Bureau and reported to the General Administration of Quality Supervision, Inspection and Quarantine. Announced after approval. The testing agency of Manas Jasper is selected by the Quality and Technical Supervision Bureau of Xinjiang Uygur Autonomous Region in the testing institutions that meet the qualification requirements.