2. Looking at the original stone with a flashlight is mainly to better observe the water, cracks, dirt and other defects and internal structure of the stone. If you look at the color, you should look at it in natural light, which will be more intuitive. If you look at the color with a flashlight, it will be biased.
3, look at the water: turn on the light to see the head of the original stone. Head is the name of jade transparency. The quality of species taken from the ground also affects the quality of water head. After lighting the lamp, we can clearly see how many stones have been eaten. According to the degree of eating stones, we can judge the probability of finished products coming out of the water and to what extent. After lighting the lamp, you can clearly see that the stone is not old and the structure is thick and tender, and vice versa.
4. Look at the flaws: you can see the cracks in the original stone from the surface, but you can't see the depth of these cracks. After lighting, these cracks are clearly visible. Where they are and how serious they are, they all have a relatively intuitive performance. We can judge how big the output of the original stone is, whether we can cut bracelets or only brand rings. Such as cracks, dirt, etc. Where there are cracks, there will be a light blocking effect. You can't use too bright light when lighting, because too bright light will penetrate the gap and transmit light, and you can't see the light blocking effect, which will lead to misjudgment.
5. Look at the structure: Generally, when looking at the original stone, it needs to be polished at an angle of 60-70 degrees, so it is easier to see the structure of Chu Yuan stone. Then, according to the structure, judge what material it is, whether it is natural or synthetic, and judge the value of jadeite by the depth of cracks or cotton.
6. Looking at the original jadeite stone with a flashlight is only one of the important methods to judge the quality of the original jadeite stone. But this is not the only way. You can also judge the jadeite original stone by observing the characteristics of the epidermis. Neither of these methods is 100% accurate. To judge the quality of a jadeite stone, we need to combine various methods and rich experience.
7. The disadvantages of observing the original jadeite stone with a strong flashlight: You should know that when we look at the original jadeite stone, the color will account for a large part. When you use a strong flashlight to illuminate the original jadeite stone, no matter what light is emitted, there will be a color cast. It will make the color darker and brighter, and it will make white feel blue; Yellow will also be brighter and brighter, thus covering up some of its flaws. Some original jadeite stones look beautiful under the light, but they look like that after cutting, which is inseparable from the irradiation of strong light and flashlight. If you are a novice at gambling on stones, you should pay attention!
8. When the strong flashlight illuminates the original jadeite stone, the water head of jadeite will become longer, which is quite different from the water head under natural illumination, especially the new stone. The original jadeite stone with young seed material and loose ground will be very transparent under the irradiation of strong flashlight, and some will be transparent for more than ten centimeters, which has a great influence on observers. Therefore, according to the above summary, if you observe the original jade stone with a strong flashlight, you should also pay attention to its cracks, cotton and impurities, and don't look too much at its color and planting water, which will be deceptive.