Sheep fat white jade appreciation points:
The white fat jade is the gem-grade material of Hetian jade. It is the best of white jade in pure white color. It has the best luster and texture. It is characterized by warm and firm, pure and pure, white and flawless, like gelatin. For this jade and ordinary white jade, according to Yan Yixuan, the simplest way to distinguish sheep fat jade is to watch under the white fluorescent lamp.
The white fat white jade is facing the fluorescent lamp, showing a pure white translucent shape with a powdery mist. The general white jade is translucent to the fluorescent lamp, but it has no powdery sensation. The biggest difference between the two is that, regardless of the grade of the white jade, it is very white to the naked eye, but the fluorescent lamp must have a slight yellowish shade under the fluorescent lamp. Therefore, if there is a slight yellow color under the fluorescent lamp, it cannot be called Sheep fat white jade. The rare and precious sheep fat jade that meets the stringent standards is absolutely inconspicuous. The identification points of the sheep fat jade must meet five aspects, namely, pure texture, fine structure, water head, color white fat, and heavy oil.
Pure texture - the content of tremolite minerals 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.
Fine structure——The tremolite in the sheep fat jade is microscopically crystallized and aggregated. The crystallite size of the tremolite can be determined under electron microscope and optical microscope. The length of the tremolite fiber in the sheep fat jade ( The longitudinal direction 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.
Water head foot - water head, spirit land is the name of jade transparency, in the 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 a translucent shape.
Color 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 light gray tone in white.
Oily weight - Yangzhiyu in the process of constant touch in the palm of the hand, it is self-contained, creating an "oily" feeling on the surface of jade, also in some Hetian fine white jade, when the sheep fat jade falls in the water , mentioning the jade body, can be dripping water is not sticky, so the oily heavy sheep fat jade is also very good, the so-called cotton, that is, toughness. Therefore, only the above five aspects are the best good sheep white jade. The Yangyu White Jade of Shanghai Yufu Workshop is a collection of these five advantages, which is called the best in jade.
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- AUTO-CHANGE MECHANISM: Change blade automatically. Simply push the button to top, pull off the used blade, then push the button back to bottom, then push up, the blade will be self-reloaded.
- ANTI-SLIP HANDLE:Soft TPR material and ergonomic design provides comfortable grip, reduce fatigue from long-time working. Built in with a blade cartridge which can store 3 blades.
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