The appearance of the name of Luodianyu is recorded in history and is mainly used for religious activities. The processed products are mainly used to please local officials and to give birth to new born children. Before the Ming Dynasty, during the period of the Shu State, there were eight Laos in the Luodian area. Yu is the main item of the Buyi people's contribution to the local leaders. After the name changed to Luo Wei in the Qing Dynasty, it was said by word of mouth that Luo Dianyu had the saying of "Luo Yu Bu Yi Gong Yu". In the "Guizhou Tongzhi" in the Wanli Period, it was recorded that "the monks, the disease, and the jade gods and gods" reveal the sacred position of Luodianyu in the aborigines.

According to the "Guizhou Tongzhi" during the Qing Emperor Qianlong's reign, "Luo Qizhong's family, the right gate of the right gate, the bridge, the rush, the establishment of a small stone general or a small stone monument, to crush the stone, stone taken in the barbaric The mountain of the gods, white as jade." The stone used by the local Buyi is the mountain material of Luodian jade. The popularity of Luodianyu has always been very high. According to Zhou Nanquan, a researcher at the National Palace Museum in Beijing, in the article "Introduction to the Origin of Chinese Ancient Jade" in 1983, "Luchuan, Guangxi, Baoshan and Tengchong, Yunnan, Luodian, Guizhou; Jade Mountain is found in Lushan Mountain (ie Lushan). The Luodian County Annals published in the 1980s also recorded that Luodianyu was exported to the Guangdong and Guangxi markets at the end of the last century. Luodian jade is produced in the marble lithology and silicification zone of the bedrock-like basal diabase and the Lower Permian limestone. It is mainly the contact between the diabase intrusion and the Permian Sildazhai limestone. Deformed and formed, due to the activity of the silica gas-liquid fluid, the amphibolite (ie, Luodianyu) is formed by alteration and alteration in the contact metamorphic zone. Due to the difference in composition of surrounding rock, different mineral combinations will appear respectively. The contact zone between pure limestone and diabase is the most favorable part of nephrite production, while some other alterations will occur when it is in contact with other impure carbonate rocks. Minerals change the quality of jade. This nephrite mine, which is directly produced in the contact zone between basic rocks (diabase) and limestone, should be a new type of nephrite ore body.

Luodian jade quality technical requirements I. Raw material requirements 1. Raw material mining: Enterprises that have obtained exploration and qualification qualifications, in the production area, according to the rock formation of the mine, manually, planned mining; according to the original stone form, color, block Size, determine the reasonable use. 2. Registration of raw materials: Apply to the relevant departments for registration of the jade raw materials mined, carry out numbering and labeling, and record the information. 3. Characteristics and types of raw materials (1) Structural features: crystalline combination, fibrous interweaving structure under microscope, massive structure. The tremolite aggregates are in the form of a radiation beam, often with stone flowers, flocculent cotton aphid, fine vein water lines, braided spots, and black solid inclusion structures. (2) Raw material type: mountain material and Gobi material. 4. Raw material index: raw material tremolite content ≥ 80%, calcite content ≤ 12%, quartz content ≤ 10%, density is 2.95 (± 0.15) g / cm3. 5. Raw material processing (1) Engraving products: After the material is selected, the process of cutting, removing the residual material, sketching the shape, roughing, illuminating, polishing, polishing, cleaning, oiling, waxing, etc. (2) Non-engraving products: traditional manual process procedures for cutting, grinding, and punching raw materials. 6. Registration of finished products: After processing, the Luodian jade products will be registered with the relevant departments according to the raw material registration number, and the number will be labeled. Second, the quality characteristics 1. Sensory characteristics: processed Luodian jade: compact structure, fine texture, jade quality, simple and heavy; opaque to translucent, waxy luster to oily luster, divided into five categories according to its color . Classification The white jade color is white, slightly gray, blue, yellow, brown and other variegated or non-bright, uniform color, translucent, porcelain-like, waxy-oily luster. Gray and white jade color is smoky gray - white - grayish white, translucent, waxy - oily luster. The basic color of the flower jade is white, light cyan, milky white, mixed with a large number of taupe or black spots, and the spots are mostly punctate, leaf-like, strip-like, evenly distributed, translucent, waxy-oily luster. The color of the sapphire is from cyan to dark cyan, translucent, waxy-oily luster. The color of the white jade is light cyan, translucent, waxy-oily luster. The color of the sugar jade is light caramel, with a small amount of brown spots. 2. Physical and chemical indicators: The processed jade has a refractive index of 1.60 to 1.61 (point measurement method). 3. Safety requirements: Product safety indicators must meet the relevant regulations of the state for similar products.

Apply to：
Producers within the scope of Luodian jade may apply to the Luodian County Market Supervision Administration of Guizhou Province for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Guizhou Provincial Bureau of Quality and Technical Supervision and announced to the General Administration of Quality Supervision, Inspection and Quarantine for approval. . The testing agency of Luodianyu is selected by the Guizhou Provincial Bureau of Quality and Technical Supervision in the testing institutions that meet the qualification requirements.