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Hand touch method If the real jade is touched by hand, there is a feeling of cold lubrication.
Inspection method Orient the jade to a place of light, such as sunlight and light, and if the color is clear and the green color is evenly distributed.
It's real jade. Tongue licking method The tip of the tongue licks the real jade, which has an astringent feeling; Fake jade, on the other hand, has no astringent feeling.
Magnifying glass. ** Put the purchased jade under a magnifying glass**, mainly whether there are cracks, those without cracks are high-quality jade, and those with cracks are secondary. Even if it is a real jade, the value of the cracks is greatly reduced, and the more cracks and the more obvious the value, the lower the value.
Characteristics of real jade: First, look at the color. Color is the most important factor in evaluating the quality of jade.
The jade with a uniform, yang, dense and positive color is the top grade. "Uniform" means uniform; "Yang" refers to the bright color, giving people a cheerful and non-depressed feeling; "Thick" means that the color is darker; "Positive" means that there are no other variegated colors mixed together.
The second is to look at the texture. Jade is silicate.
The size of the constituent crystals of polycrystalline minerals formed at high temperatures and pressures directly affects the smoothness, transparency and hue of the polycrystalline minerals after grinding. Therefore, the finer the polycrystalline structure, the better the texture of the jade.
The third is to look at transparency. Transparency is a physical phenomenon that complements texture. The finer the texture, the higher the transparency. If jade is as transparent as glass, the fineness of the crystals inside it allows the light to penetrate without being blocked.
The fourth is to look at the acquired processing. When jade is mined, it is just like ore, and the colored parts of the stone must be carefully cut into different ornament shapes by experienced professional craftsmen, then processed, polished, carved, polished and waxed before it can reach the market**. Those that have not been bleached, faded, or dyed at all during processing are rated "A" and have the highest value; The bleached and faded ones are rated "B", followed by the value; The dyed "C" grade is of lower value.
Excellent acquired processing can make jade icing on the cake and multiply its value.
Five look at the cracks. Cracks on jade can be caused during mining or processing. Once you have a crack, no matter how good its color, texture and transparency, it will affect its value.
Sometimes the crack is not noticeable on its surface, but it can be seen when you look closely in the sun. Especially for jade that has been bleached, faded or dyed, cracks are common.
While identifying the quality of jade, it is also necessary to prevent artificial imitation jade from being fake and real. Artificial imitation jade is made of dyeing glass, plastic and other materials. Most of the glass imitation jade contains bubbles, the color is bright, the green has a strong brightness, and the color is different from the real jade.
Plastic imitation jade is lighter than real jade, with very poor transparency and dull tone, which is far from real jade.
Good luck, happiness, and fortune!
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The real jade is cold, warm or not, and it is burned with a lighter if it is wrapped in the jade with hair, and it is fake, and vice versa, it is true, begging.
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The main thing is to measure the hardness. With the glass plate (Mo hardness as the standard, except for Xiuyu and turquoise, it is generally possible to scratch the streak on the glass plate, and the jade itself is not damaged at all. Fake jade is generally softer and can't scratch the glass.
It is very smooth when rubbed against glass, and it will feel very astringent when it touches glass.
Common fake jade is generally processed from plastic and glass, which are amorphous materials with low hardness, low density, and the characteristics of the material's nature. If the plastic can be picked with a steel needle, or can carve scratches, it can float lightly in the hand. The glass shows bubbles inside under the light or sunlight, and the polarizer shows amorphous ** no periodic light and dark changes when moving), and there are swirling stripes made of raw materials.
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