Emerald identifies the function of flashlight.
The function of flashlight:
First, look at the cracks
There will be a light blocking effect where there are cracks, but you can't use too bright light. Too bright light will penetrate the crack to transmit light, so that the light blocking effect can not be seen.
Secondly, look at the structure.
1: The correct usage should be lighting at an angle of 60-70 degrees, which makes it easier to see the structure.
2. According to the structure of the material, judge what material it is, whether it is natural or synthetic.
3. Use light transmittance to judge the depth of some strings, the depth of cracks and the depth of cotton.
Flashlight is the most commonly used tool and a very important means to identify jade. The strong light angle of different flashlights and the distance between strong light source and jade are different, and the identification results are different with different illumination methods. Some people introduce the color of jade to others by direct flashlight or backlight, which is misleading. To identify the fineness of jade particles, we can only beat them with a strong flashlight at a 45 angle.
How to use flashlight in jewelry appraisal;
The flashlight light source is close to the surface of jade, mainly depending on the texture and richness of jade.
The bright flashlight shines directly on the surface of jade, which is translucent and relatively concentrated in charm, but directly shines on the mixed products of Shi Ying, marble and glass, causing relative astigmatism.
When the direct flashlight moves slowly, it can identify whether the jade texture structure is uniform. When the flashlight is translated, the light transmittance of jade is uniform, indicating that the structure is uniform and the light transmittance is uneven, indicating that the structural uniformity of jade is not good.