Huang Longyu was originally called yellow wax stone. In the eyes of local people, it has the color of Tian Huang, the hardness of jade, good hardness, high transparency and rich colors. Because it was produced in Longling, and its color was mainly yellow, it was finally named Huang Longyu. At present, from the perspective of appreciation, it can be divided into "Native Huang Longyu" and "Engraving Huang Longyu".

The national standard (GB/T 1 6552-2010) 2011February/KLOC-0 was officially implemented, and the international standard topaz was named Huang Longyu in the standard. Moreover, it has no sense of origin. This standard is applicable to the fields of jewelry and jade identification, cultural relics, commerce, customs, insurance, pawn, asset appraisal, scientific research and teaching, literature publishing and so on.

In the industrial development of Huang Longyu, Longling County adheres to the principle of paying equal attention to development and construction, using and protecting peers, promoting industrial management in Huang Longyu according to law, and vigorously building ecological mines. Wherever mines are mined, vegetation will be restored, showing a situation of coordinated development of economic, social and ecological benefits.

Huang Longyu has many conditions for the formation of aquatic plants and flowers. In ancient times, the Qinghai-Tibet Plateau was continuously squeezed by the Indian Ocean plate and the Eurasian plate. Longling County, located at the junction of the Qinghai-Tibet Plateau and the Yunnan-Guizhou Plateau, was active in geological activities, and the Huanglong jade vein was prone to cracking, cracks and fractures under the action of earthquake force. Longling area is rich in vegetation, many mixed forests and abundant precipitation, which moistens the earth. Under the action of precipitation, mountain springs, groundwater and slightly acidic soil gather and flow between valleys on the surface, dissolving metal substances such as manganese ions and iron ions on the surface. These metallic substances quickly merged into the mountain springs and groundwater, and reached the deep vein with the mountain springs and groundwater, where they were disseminated in the Huang Longyu vein for countless times, settling and filling the cracks and fissures of jade materials. The conditions for the formation of aquatic plants and flowers in Huang Longyu are that the soil around Huang Longyu vein should contain minerals such as manganese and iron, and the soil is acidic, forming a slightly acidic environment to dissolve metal ions. The jade mines in Huang Longyu vein are best distributed on the slopes of sunny mixed forests.

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Generated on the banks of rivers and streams, there are aquatic plants and seed aquatic plants. This kind of jade material is relatively rare, and it produces more yellow water plants, red water plants or black water plants. The grass is vivid and has no general scenery. Water grass flowers have good texture. Yellow aquatic plants and red aquatic plants are not obvious to the naked eye, but the grass shape is clear when viewed in light or sunlight. What is produced in the wet grassland or beside the mountain pond is called turf material, and jade material with aquatic plants is called turf material aquatic plants. This kind of jade material is exquisite in texture and vivid in grass shape, and it is the earliest found aquatic flower material. Because aquatic flowers were not known at that time, aquatic flowers were eradicated as an impurity. The largest output of aquatic plants and flowers in Huang Longyu comes from the mouth of the cave. The aquatic plants and flowers produced in each cave have similar characteristics in texture, grass shape and picture, and are self-contained. There are significant differences in the aesthetic characteristics of jade materials produced by different holes. According to the environment, aquatic plants in Huang Longyu can be divided into water plants and cave plants, and water plants can be divided into seed plants and mountain plants. The cave materials are divided into planktonic aquatic plants, subcontracted aquatic plants, semi-complete aquatic plants and complete egg aquatic plants.

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Huang Longyu Shuicaohua cave materials are the varieties with the largest yield and the most distinctive color and grass shape. Each cave has its own system, and the name of the cave is named after the place of origin. For example, the mineral materials produced by mining holes in Xiaoheishan are called Xiaoheishan materials, and the mineral materials produced by mining holes in Yangyanhe are called Yangyanhe materials. The geographical location of each mine is different, and the geological structure and formation environment of its underground veins are different from the surface environment, so the minerals produced are also different and the quality is uneven. According to this, the production holes are classified. Classification by hole; Black Landscape Flower, Yangyanhe Flower, Tuanpo Waterworks, Dachuanbu Waterworks, Yishazhai Waterworks, Chuntouping Waterworks, Zhen 'an Waterworks, Longxin Waterworks, Longjiang Waterworks, etc.

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The distribution of aquatic plants and flowers in Huang Longyu is complex. Practice has found that caves with abundant output and well-developed veins are generally sunny, with lush vegetation on the sunny side, mostly mixed forest slopes, so that the surface and underground water can be conserved for a long time. Under the irradiation of sunlight, the temperature difference between day and night is large, which makes the veins periodically heat up and contract. Under the action of temperature, humidity, physical pressure and tectonic stress of the external environment, metal substances such as manganese ions and iron ions penetrate into the surface mountain springs and groundwater. The jade material mined from such a hole is excellent in jade quality, water head, color and grass shape. However, the holes under a single pine forest have the least groundwater content, and the reproduction of aquatic plants and flowers is also poor. The water dries up, making the color yellow and the grass dry, or the jade is white and blue, and the texture is soft.

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Autumn waters and the sky are the same color, which is the best portrayal of aquatic plants and flowers in Huang Longyu.

Evaluation factors of aquatic plants and flowers in Huang Longyu

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Shuicaohua is an independent variety in Huang Longyu, and its name is named after pictograph, that is, Huanglongyu has a substance that looks like grass, and the most wonderful thing is undoubtedly the addition of the word "water", which means that Huang Longyu Shuicaohua is moist, moist, transparent and moist. Moreover, it also coincides with the painting scene with aquatic plants as the center of gravity. Its background seems to be the quiet and pleasant depths of the sea, and aquatic plants or grass sway with the microwave, which makes people fascinated.

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The aesthetic taste of aquatic plants in Huang Longyu objectively determines that their evaluation factors are composed of grass shape, grass color, painting boundary, water planting and device type.

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Grass shape

That is, the grass posture and growth morphology of aquatic plants and flowers. Water plants and flowers have roots, the grass shape extends completely, the shape is clear and vivid, the posture is beautiful, the charm is graceful, graceful and light, and full of rhythm. Like beautiful flowers and plants, it is lively and fragrant, like famous mountains and rivers, it is beautiful and strange, like auspicious animals, it is blessed by heaven.

Grass color.

That is the color of aquatic plants and flowers. Golden yellow is the top grade, followed by yellow, yellow black and black.

Painting.

That is, Huang Longyu aquatic plants and flowers as the main body, Huanglong jade landscape pattern. The landscape shown by the structure and proportion of the main branches and branches of aquatic plants can be regarded as the main scene. In addition, Huanglong jade is rich in color. When the texture and color distribution are deep or shallow, or composed of two or more colors, the painting scene formed by color difference and color gradient is regarded as an auxiliary scene. The main scene and the auxiliary scene are organically combined, with reasonable structure, harmonious collocation and beautiful and harmonious artistic conception, which is the top grade.

Plant water.

Namely fineness and transparency of texture. The finer the texture of Huang Longyu, the better the gloss. Water refers to the transparency of Huang Longyu, with sub-transparency being the best, followed by translucency and opacity.

Type of equipment.

That is, the finished shape. There are various shapes of aquatic plants and flowers in Huang Longyu, most of which are brands, such as listed, square, round and oval cards. Large ornaments are magnificent and suitable for expressing the artistic conception of aquatic plants and flowers, while seals are mostly fixed in square, rectangular and circular shapes, so it is a bit difficult to maintain the integrity of aquatic plants and flowers reasonably.

At the same time, the county has continuously promoted the legal management process of Huang Longyu industry. After two years' efforts, the Regulations on Resource Management in Longling Huang Longyu, Yunnan Province has been reviewed and approved by the Standing Committee of the Provincial People's Congress and will be implemented on 20 15 1.