"Hands are as soft as sputum, skin is like gelatin, collar is like a scorpion, teeth are like rhinoceros, dagger moths, clever smiles, and beautiful eyes." This sentence is a description of a woman's beauty. Skin such as gelatin is the smooth and smooth white skin of women. The suet jade, literally imaginable, is as smooth as milk, and it is a breeze to think about it.
Sheep fat white jade, also known as "white jade", "sheep fat jade", as the name suggests is like jade (commonly known as sheep oil) jade. The interpretation of modern gemologists is: high-quality white jade, its color is white or white, slightly light blue, milky yellow, etc. The texture is fine and moist, the oil is good, and there are a few stones and other impurities. The sheep white jade mainly contains tremolite (95%), actinolite and epidote, which is like gelatin, which is a kind of nephrite. The ancient biography "ç™½ç’§æ— ç‘•" means white jade, and the white fat jade is a high-quality variety in jade. The toughness and wear resistance are the strongest in jade. The jade of white fat white jade is soaked in the groundwater of the Kunlun Mountains under the wasteland or oasis for millions of years, and the output is rare and of high value. The white fat white jade crystal clear white, delicate and moist, but less sputum, "white as a fat." Its characteristics are that it is particularly delicate, bright and warm. The best sheep fat white jade is almost innocent, like the fat sheep fat meat that has just been cut, and the gloss is just like the condensed fat.
Sheep fat white jade has been highly valued since ancient times and is the best in jade. It is very precious. It not only symbolizes the gentleman's character of "benevolence, righteousness, wisdom, courage, and cleanness", but also symbolizes the secular feelings of "beautiful, noble, auspicious, gentle, and comfortable."
In ancient times, the emperor was qualified to wear white jade. Archaeological facts have confirmed that the jade used by many ancient emperors is a special white jade. Among the treasures of museums in many localities, the historical relics carved from white jade and jade are not regarded as "national treasures". For example, the Western Han Dynasty "Queen of the Queen" unearthed is made of crystal clear and pure white sheep.
The identification points of sheep fat white jade must meet five aspects, namely, pure texture, fine structure, water head, color sheep white, oily weight.
Identification of sheep fat jade
1. Pure texture - the mineral content of tremolite in sheep fat jade reaches 99%.
The sheep fat jade exists in the most perfect part of the wall rock alteration. When the granodiorite is in contact with dolomite, a series of contact metamorphic rocks are formed, and the dolomite becomes dolomite marble. The late magmatic hydrothermal fluid along the dolomite marble tectonic fissure channel is metamorphic to form tremolite.
The surrounding rock erosion is transformed into three kinds of lithofacies of dolomite marble-tunnelized petrochemical dolomite marble-metamorphic rock, and the sheep fat jade is found in the tremolite rock facies.
2, the structure is fine - the tremolite in the sheep fat jade is microscopic fibrillar crystallized crystals and aggregates, the crystal size of the tremolite can be determined under electron microscope and optical microscope, the tremolite fiber in the sheep fat jade The length (longitudinal) is 0.033-0.01 mm, and the width (transverse direction) is 0.0006-0.001 mm. These microscopic, fluffy, felt-like tremolite crystals are intertwined to form a pile-like structure, a felt-like structure, and an interwoven structure.
Microscopic, fluffy, felt-like tremolite crystal aggregates, characterized by orthogonal polarized light, do not exhibit uniform extinction at the same angle.
3, water head foot - water head, spirit land is the name of jade transparency, in tremolite jade often from the thickness of 2mm as the standard, white jade in this standard is translucent - opaque, the head of the sheep fat jade shows translucent shape.
4, the color is sheep fat white - sheep fat white is not pure white, but white with oily luster, some in white can reveal a slight yellow, poor texture can also reveal a slight shallow in white Gray tone.
5, oily weight - sheep fat jade in the process of people's palms constantly touch, self-contained, on the surface of jade produces a "oily" feeling, in some Hetian fine white jade also has this phenomenon, when the sheep fat jade pendant In the water, the jade body is lifted, and the dripping water is not sticky. Therefore, the oily heavy sheep fat is also excellent, and the so-called cotton, which is toughness.
Yangzhiyu maintenance knowledge
1. Avoid bumping with hard objects. The jade is easily broken after being hit. Sometimes the naked eye does not see cracks, but the molecular structure in the jade surface has been damaged, resulting in dark cracks, which will appear for a long time, greatly impairing its perfection and collection value.
2. Avoid dust and oil as much as possible. If there is dust on the surface of the jade, it should be cleaned with a soft brush; if dirt or oil stains are attached to the jade surface, it can be washed with warm soapy water and then washed with water. Never use chemical degreasers. For the heavily contaminated old jade, professional companies that produce and clean jade can use professional ultrasonic cleaning and maintenance.
3. Jade pendants should be placed when not in use. It is best to put them in jewelry bags or jewelry boxes to avoid bruises.
4. Avoid contact with perfumes, chemicals, soap or human sweat. Because the jade is exposed to too much sweat, it will be eroded and the outer layer will be damaged, affecting the original vividness. Jade, sheep fat white jade, more avoid sweat and grease, after wearing, wipe with a soft cloth.
5. Avoid direct sunlight for long periods of time. Jade sun exposure will explode when heated, and the molecular volume will increase, which will affect jade. In particular, crystals, agates, etc. are subject to high heat and burst, so it is more difficult to approach the heat source.
6. An environment that is too dry tends to evaporate water, thereby damaging the quality of jade.
At the moment, the jade has become a popular favorite. In recent years, the collection market has been "dawning", and traditional collectibles such as paintings, porcelains, and jade articles are on the rise. Among them, jade articles are more "singular goods". According to industry sources, now good jade can sell high prices, and in the case of increasingly developed economy and social stability, the price of jade will continue to rise.
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