How to distinguish the quality of jadeite original stone

1, whether the fog layer is verified can be simply understood as the state of the original stone surface and the result of weathering. Under normal circumstances, when we identify the original jadeite stone, the primary criterion is whether the original stone has a fog layer. Fog layer can help us evaluate the quality of original jade accurately.

Fog layer shows that jadeite is of high quality, while jadeite without fog layer is of low quality, and its value is relatively low in most cases. However, more experienced players should know whether there is fog layer or not, and they can't judge the quality of all the original stones. Because the raw jadeite in the old field generally has a fog layer, the probability of no fog layer is relatively small; The jadeite in Xinchang Kou has little fog layer.

2, fog surface color verification

There are many kinds of fog colors of jadeite original stone, and many experts distinguish the quality of the original stone by fog colors. The fog colors of raw jadeite are usually white, green, red and yellow. Among them, white fog layer and yellow fog layer are the most popular colors, and the quality of the original stone of this color is generally good.

By comprehensive comparison, the original stone of white fog layer and yellow fog layer will be relatively better, red mist layer is slightly worse, and black fog layer is the worst. Therefore, if you see the original jadeite stone with white fog layer or yellow fog layer, you can choose the original stone of this color first.

3. Verification of fog surface thickness

The matte surface of jadeite original stone is the product of weathering transition, and its thickness is also different. The thickness of fog layer is less than one centimeter, while the thickness of dense fog layer can reach several centimeters at most. At the same time, the fog surface with different thickness can also test the internal quality of jadeite original stone.

If the fog surface is thin, the intrinsic quality of this jadeite stone is poor and the color is uneven. We can identify the quality of jadeite original stone by checking the thickness of haze layer under strong light irradiation. The color of the jadeite stone on the dense fog surface will be more uniform, otherwise the color will be uneven.

Matters needing attention in purchasing jadeite raw stone

Note 1: The jade collection market is getting hotter and hotter, and congestion is inevitable. If you don't have technical confidence, it is recommended to buy it in a regular trading place, or you can ask for an appraisal certificate.

Note 2: The price of jadeite raw stone is different, especially the first grade jadeite raw stone, which is expensive. However, the export price is not necessarily the transaction price. Don't fall into the trap of businessmen. When you hear what others say, you will think that you bought the lowest price. You must have a standard in mind. At the critical moment, even if it is "one knife", we should try our best to reduce the price.

Note 3: The green color of jadeite stone is different from that after completion. If the original stone is sunny green, the shipment may be light green. If you suddenly find a bargain, you can't make a bigger investment with this mentality, because luck is very important and technology is very important. Don't follow blindly.