<h1 class="pgc-h-arrow-right" data-track="1" > is not a quality standard</h1>
The title already points out the core essence of this article, which is intended to change the long-standing misunderstanding of the concept of mutton fat jade. The author once thought that mutton fat jade is a standard of white jade, that is, when the oily fineness of white jade reaches a considerable degree, it can be called sheep fat jade, which can also be said to be the highest standard of white jade, and any aspect of quality top to ceiling can be called sheep fat jade. The author also popularized this concept to many jade friends at one time, and repeatedly emphasized that mutton fat jade is a quality standard when talking about mutton fat jade on different occasions many times. However, with the observation and summary classification of a large number of white jade and raw materials in recent years. Overturning the original view, it is increasingly believed that mutton fat jade refers to one jade species in white jade, rather than a quality standard.
<h1 class="pgc-h-arrow-right" data-track="7" > jade can be more specifically subdivided in addition to color classification</h1>
This change in concept is due to a deeper understanding of jade, and any deepening of knowledge of a certain field will result in a more detailed distinction between research objects. Europeans and Americans who have been eating beef for a long time can give different parts of beef so many special names, such as what kind of sirloin steak tomahawk steak. Senior make-up artists, can call out dozens of lipstick reds out of dozens of hundreds of names, when you look more, you can find that these reds are indeed different, but the daily language is not enough to describe the subtle differences between them, only with the help of the unique vocabulary in the industry, to give each red a special name, to facilitate communication. Similarly, after observing enough white jade samples, it can be detected that Hetian jade can continue to subdivide different varieties even within the scope of white jade. The so-called division of the color of Hetian jade is a classification made by the most intuitive color standard for the convenience of the public popularization of Hetian jade.
Mutton fat jade refers to one of the jade species under the premise that the major category of white jade can still continue to subdivide the varieties. The reason why people have always tended to think of mutton fat jade as a quality standard is because the vast majority of people do not recognize that jade can continue to be subdivided under the color classification.
<h1 class="pgc-h-arrow-right" data-track="10" > subdivided varieties</h1>
Since it has been repeatedly emphasized that jade can be subdivided by other criteria in addition to color, what is the other basis? It is based on the internal structure of the jade, the glossy texture and the unique rough form. The three are closely related, and the latter two are based on the internal structure.
The jade species that can really produce mutton fat jade, the internal structure is feathery structure or even no structure; when used as a seed material rough, the skin pores are extremely delicate, and even make people think that the surface has been artificially polished, the pores are polished, and after being made into a device, the jade has a gelatinous feeling like jelly. When used as a rough seed, the shape must be flattened and long diamond-shaped or similar to the shape of a soap that has been used for a period of time, with directional fusiform characteristics. The above is a standard that frames the subdivision jade species that can be produced. See an article I once wrote about ointment! —— A rare subdivision of Hetian jade. The so-called mutton fat jade is the white jade that appears in the ointment seed material.
The visible silk structure of the ointment material, the form is flat and long
There is an ointment, the form is flat and long, and the surface is smooth and poreless
Large pieces of ointment seed material, smooth surface, caressed like satin
A small piece of oil paste, the color is not peeled off the blue, but the whiteness does not reach the mutton fat jade
Materials that meet the above ointment standards are not common, and we can analyze them one by one to find that in the Hetian jade seed material family, there are many other jade species that are different from the mutton fat jade species. First of all, the structure, seen in the textbook, Hetian Yu is a fiber interwoven structure, some are called felt-like structures, in the specimen teaching, the teacher likes to take the typical specimen, under the 45-degree light, see the internal structure like porridge, with granular units, the boundary between them is not very clear, by the ambiguous shadow as the boundary. This kind of material with a clear granular structure, even if the whiteness is good, will not produce mutton fat jade. In general, white jade with this typical granular structure must be clearly visible when used as a rough seed material.
Small pieces of white ointment, near mutton fat jade
Yellow and white oil paste, light yellow skin color and jade flesh infiltration, very rare
Thicker paste
Speaking of the glossy texture of the surface, there are two seed material names on the market that refer to specific material species with epidermal characteristics, one is called white leather material, and the other is called oil storage material. Being able to name these two materials according to the characteristics of the epidermis and to be recognized by the general public already illustrates a point in this article, that is, in addition to the classification of external colors, jade can be more finely divided. Oil depot material, the skin has black spots like oil, this layer of black spots are dotted with large and small, evenly applied to the surface of the rough seed material, only a thin layer, under the surface, is oily and fine jade, it is said that the oil of the oil depot material is very good, but it is not as good as the oiliness of the sheep fat jade species mentioned above, jade in terms of oil stock powder is strong, like cool powder, but there is no sheep fat jade seed that is about to melt and drip feeling. White leather, the epidermis has a layer of white pulp, if this layer of white pulp is thick enough, it becomes a stone jade. Generally speaking, the thickness of the white pulp of the white leather is limited, and even in some places, the flesh is thin, which can be seen. The subcutaneous jade of white leather also has common characteristics, which are easy to produce lychee meat, and the jade has a high permeability, like the flesh of lychee. There is also a kind of yellow Qin material, the vast majority of yellow Qin material, the oil is not good, and even there is a phenomenon of putting alkali for a long time, the white meat part of the yellow Qin material, lackluster, either loose or tender and unsightly.
White leather
Oil depot material
Finally, speaking of shape, in addition to the unique form of mutton fat jade, the shape of the seed material also has oval shape, round cake shape, steamed bun shape, nearly square and so on. Generally speaking, the structure of this type of material is not a unique structure of muttonite, and the jade will certainly not have the characteristics of muttonite.
Ordinary Hetian jade seed material, no matter how white this material is, will not be mutton fat jade
Vulgar powder, vulgar jade seeds, no matter how white is not mutton fat jade.