Huang Longyu's evaluation criteria
The value of Huanglongyu mainly depends on color, structure (texture), transparency, clarity, gloss, crack, and crafts.
1. The color of Huanglongyu:
Huanglongyu mainly uses yellow and red as the main color. It often presents a variety of colors due to the type and content of trace elements. Huanglongyu also has multiple colors. The color is also commonly known as color, and its color should be rich (rich), positive (sharp), positive (pure), and (soft).
2. The texture of Huanglongyu:
The texture of Huanglongyu can be defined as the combination of structure and transparency of Huanglongyu. The combination of specific transparency and structure is a type of texture.
The structure of Huanglongyu refers to the degree of crystal crystallization, particle size, relative size, crystal shape and the relationship between the crystals of Huanglongyu.
Transparency refers to the ability of Huanglongyu to penetrate light.
Huanglongyu is a collection of cryptocrystalline minerals. The finer the texture, the better. The performance is good, the texture of the seeds is delicate and soft, and it has a silky texture. Although some grains in the jade are not visible to the naked eye, they can be clearly felt during the polishing process or the washing degree of the seed material. The "species" are general, and if the grain is visible to the naked eye, Then rated as poor. The quality of the species directly determines the value of Huanglongyu, so this is an important criterion for judging the quality of Huanglongyu.
According to the change of the transparency of Huanglongyu jewelry, it is divided into five levels: transparent, translucent, translucent, micro-transparent and opaque, which are represented as T1, T2, T3, T4 and T5 from high to low.
3. The clarity of Huanglongyu:
In general, the jewellery-grade Huanglongyu can be reached. The cockroaches are generally rare. Even if they are only in the inconspicuous parts, their value will be greatly reduced. Therefore, the existence of the scorpion of Huanglongyu will reduce the value of Huanglongyu to varying degrees.
Each piece of Huanglong jade generally contains natural inclusions, just like natural birthmarks, and the quantity, size, shape and color of these inclusions determine the clarity and uniqueness of each piece of Huanglongyu. The level of the amount of strontium inside and outside the Huanglong jade jewelry observed by the naked eye and the distribution status.
According to the change of the purity of Huanglongyu jewelry, it is divided into four levels: pure, pure, semi-pure and under-purified, which are represented as J1, J2, J3 and J4 from high to low.
4. The luster of Huanglongyu:
The luster of Huanglongyu can be divided into: grease gloss, waxy luster, glass luster, earthy luster. The gloss of Huanglongyu jewelry is divided into four grades, which are represented by G1, G2, G3, and G4 from high to low.
5. Huanglong jade crack:
The crack should be a crack without mineral filling. There is no doubt that the crack is a fatal damage to the quality of Huanglongyu, which greatly affects its value.
6. The volume of Huanglongyu:
Relatively speaking, the larger the volume, the higher the value.
7. Huanglongyu processing technology:
For jewellery such as ring faces and earrings, it is required to be cut and well-polished. For the pendants and ornaments, the craftsman's ingenious conception and skillful processing techniques play an important role in improving the value of the finished product. In particular, the craft of carvings not only pays attention to the good meaning, but also pays attention to the clever use of the pretty colors. At the same time, it requires the knife to be delicate, sleek and smooth. A good piece of Huanglongyu with a good craft, just like the icing on the cake, will undoubtedly enhance the value of the finished product.
Hengshui 89 import and export trade Co., Ltd. is a company specializing in the production of Arab products, which integrates industry and trade. The factory of the company has more than 10 years of experience in the production of Arab clothing, with more than 200 clothing production machines; Specializing in men's Arabian robes and pants products, including: shirts, Saudi robes, Sudan robes, Kuwait robes, Qatar robes, UAE robes, Libya robes, Morocco robes, Afu robes Khan suits, Oman suits and other Muslim clothing, Arab women's clothing mainly for sample processing, daily production of more than 10000 Arabian robes; This year, we have developed a production line of knitted products for the Middle East market, such as Cotton Underwear, T-Shirts, women's suspenders, etc; Other Arab daily necessities are also involved, such as the Arabian tapestry, Arabian incense burner and so on; Welcome to our company to visit and negotiate.
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