The beauty of Hetian jade, the beauty is its warmth, and it is this texture and luster that attracts us is the warmth that other jade does not have.
The so-called warmth is a feeling that she does not shine like a gem, but it can attract everyone's attention. The best of Hetian Seed Jade, Yangzhiyu, the name "羊脂" in the name, not only refers to the color of jade, but also an overview of texture and luster, which is wonderful.
What are the luster of jewellery and jade?
Gloss is scientifically defined as the light reflected from the surface of an object. It is related to the texture, transparency, and smoothness of the surface. For gem minerals, most of them are glass, because the reflected light is affected. The influence of gem mineral color, surface flatness, and combination of aggregates can also produce some special luster.
There are several types of gemstone gloss from high to low:
Diamond gloss, glass gloss, grease gloss, resin gloss, waxy luster, silky luster and pearl luster.
Hetian jade has a very soft luster and is a grease luster that is related to the mineral's refractive index, absorption coefficient and reflectivity. The greater the reflectivity, the stronger the gloss of Hetian jade.
What kind of "light" does Hetian jade have?
Hetian jade has the characteristics of grease luster, glass luster and waxy luster. Among them, the luster of grease is the best, and the warmth of Hetian jade is derived from this kind of Guanze.
Grease gloss refers to the diffuse reflection of the mineral surface to the incident light, just like the reflection of natural light on natural light. The waxy luster is a relatively weak diffuse reflection phenomenon, the eating is obvious, the reflectivity is very poor, like the reflection of the candle.
The good Hetian jade oil is full of scent, while the Korean material has a waxy feel after polishing, showing a waxy luster; the Qinghai material will have a glass luster.
Where does Hetian jade's oily feeling come from?
The first is the tremolite content of tremolite jade. Xinjiang Hetian jade has a tremolite content of over 95%. The tremolite content of Russian, Korean and Qinghai materials will not exceed 90%.
The content of tremolite is one of the important performance characteristics of grease. The higher the content of tremolite, the stronger the oily feeling. The surface of the jade will show a strong oily luster, and at the same time, it will feel a strong sense of grease on the hand.
Followed by the crystal structure of Hetian jade. Hetian jade has very fine crystal grains and a short fiber-like microstructure. It has a dense and small pit shape in cross section. It has the best light scattering and polishing aging properties, and can achieve high brightness, but no glass. The simple planar reflection effect, which produces a sense of three-dimensionality and transparency, and the more the three-dimensional sense and the more transparent, the more psychic phenomenon occurs. The density and fine crystal grains match to produce a delicate and moist feeling.
Influencing factors of “oily runâ€
The oiliness of Hetian jade is not only related to the crystal structure of its tremolite, but also closely related to the fineness of Hetian jade, the degree of compactness between crystals, hardness and grinding method.
Fineness
The fineness of the particles, the fineness and uniformity of the white jade have a great influence on the jade, and it is also one of the important basis for judging different materials. Although the structure of the seed material is loose and dense, the size of the particles is generally much smaller than that of the Russian and Qinghai materials. The Russian and Qinghai materials generally have large particles, so they are not easy to be polished, and it is easy to spot spots. The finished product will feel like a hand. Russian jade is relatively dry, lacking oily feeling; Qinghai material is more transparent, sometimes visible glass luster.
Density
Hetian jade seed material has a high density. The density and fine crystal grains match to produce a delicate and moist feeling. The reflectivity of the seed material, the refractive index and the transmittance are just right, so that the transparency of the jade is between semi-transparent and micro-transparent, and the surface layer has a transparent feeling and the inside has an incompletely transparent layering.
The density and scattering rate of jade in Russian and Korean materials are slightly worse, resulting in insufficient feeling and layering; and the density of Qinghai material is not high enough and the transparency is too high, which also leads to lack of delicateness and layering.
hardness
The higher the tightness, the stronger the gloss, and the higher the hardness, the more luster will be. Therefore, if the silica is too high, it will produce a slightly rigid luster. The rigid luster is good for jade, but the charm of Hetian jade lies in Its oiliness and high rigidity will affect it.
Grinding and polishing
The quality of polishing technology directly affects the gloss.
Hetian jade generally has two polishing methods. The first is matt, that is, it is only slightly polished, and the gloss is dark, but the grease is strong. The second way is strong polishing. Hetian jade is ranked in the top three in the jade stone, and has a felt-like fiber interweaving structure, and the jade is dense. Therefore, the result of strong polishing will make Xinjiang Hetian jade shine.
Qinghai materials, Russian materials, Korean materials, etc., no matter how hard to polish, even if the surface is thrown away several layers, it will always be the luster of the black. There will be no oil luster in Xinjiang Hetian jade.
General merchants will choose the polishing process of Hetian jade finished products for the comprehensive factors such as the quality and whiteness of jade, that is, decide whether to make Hetian jade into a light or a matt.
Most of the seeds are polished to a luster, and some other materials will have a glass luster. For sanding, the higher the grinding speed, the finer the sanding, the stronger the gloss, so some polishing masters like to use the cowhide after the oil stone is finished, which will look oily. However, Hetian jade's best way to play is to use human hands, so that Hetian Yucai played out is more oily and natural.
Yantai Belief Cap Co.,Ltd. , https://www.jingermachinecn.com