Reflected light. The quality of jadeite can be seen by reflected light. Under the irradiation of light, the light reflected by the jadeite with better quality will be brighter and clearer, indicating that it has a strong sense of grease, and vice versa. impurity

To identify jadeite by light is to illuminate the interior of jadeite by spotlight, observe its structure, grain and whether there are bubbles, or observe it by violet light.

Transparent observation refers to observing jadeite through sunlight or artificial light source. Observing jadeite under the light source, natural jadeite will show some impurities, defects, color roots, color distribution and so on in the transparent part. Observing fake jadeite by light, there is generally no flaw, and the distribution of outstanding roots and colors cannot be seen.

How to identify jadeite with violet light and how to examine jadeite with ultraviolet light.

Drip identification method: drop a drop of water on the jade. If it is dewdrop-shaped, it is real jade. Touch with both hands: If it is real jade, it feels cold and lubricated by hand. High-light observation method: Observe jadeite in high-light places, and the real jadeite is transparent in color and evenly distributed in green.

Ultraviolet fluorescent lamp: purple light can be said to be a good helper to identify jadeite. Putting jadeite under purple light, natural jadeite has no fluorescence reaction. If it is dyed jadeite, it will have a fluorescent reaction. This method is especially effective for jadeite to dye purple, and purple jadeite has a strong fluorescence reaction under purple light.

Make sure that the surface of jadeite is clean before washing jadeite and preparing to identify it with violet light. Find a dark environment, for example, choose to distinguish at night, shine purple light on jade, and see a fluorescent reaction, mostly processed.

The identification of true and false jadeite by ultraviolet lamp is mainly by observing whether jadeite has fluorescence reaction under ultraviolet lamp irradiation. Under ultraviolet light, natural jadeite has no fluorescence reaction. However, many artificially treated jadeites, that is, jadeites containing fillers such as epoxy resin, will fluoresce under the irradiation of ultraviolet lamps.

To identify the authenticity of jadeite with purple light, we should first wash it, then find a dark place and observe it after being irradiated with purple light. True jadeite is one that does not glow under purple light or only emits a little fluorescence. Violet light emits strong fluorescence, and the overall brightness is fake jade.

After soaking in glue, it becomes B-grade jadeite or B+C-grade jadeite on the market. Fluorescent reaction will occur under violet light irradiation, but this appearance is not recommended.

How to identify true and false jadeite with jadeite lamp

Reflective observation: the surface of the finished jadeite will be polished, and its surface will reflect light. You can see its reflection by adjusting the angle of jadeite under different light, and some can even be seen with naked eyes, and some need to be observed with a magnifying glass. Fake jadeite will reflect light weakly and look dim.

When jadeite is polished, it can be seen that the texture can distinguish between true and false. In the light, the texture of real jadeite will be clearer, and the texture of fake jadeite will be too uniform. You only need to hold an ultraviolet lamp to illuminate the jade, and then you can judge whether it is true or not according to whether it has a fluorescent reaction. Natural jadeite will not react under ultraviolet light.

Reflected light, through which we can see the quality of jadeite. Under the irradiation of light, the light reflected by the jadeite with better quality will be brighter and clearer, indicating that it has a strong sense of grease, and vice versa.

How to distinguish jadeite original stone from water by illumination (how to judge water by illumination)

1, jade lights up to see how to grow water: look at the structure, look at the cracks, look at the crystals. By looking at the structure and light, we can better observe the internal structural characteristics of jadeite original stone and judge it by the intensity of reflected or refracted light. The fineness of jadeite crystal particles and the diffusion degree of pores can also be used to observe the water plants inside jadeite.

2. Distinguish with jade glare lamp: See through luminosity with yellow light. The deeper the light transmittance, the larger the diameter of the surrounding light, the better the water and the more valuable the material.

3. Illumination can better observe the internal structure of jadeite original stone, and predict the water planting in the original stone through the intensity of reflected or refracted light, the fineness of jadeite crystal particles and the degree of pore diffusion.

4, jade lamp to see the variety, mainly depends on the particle size, whether the meat is delicate and close, what is missing is the taste. Look at the seeds under strong light and pay attention to the backlight. The stronger the backlight, the older the seed. Although jade is more beautiful in the light, it is actually the most accurate to look at it in the sun.

How to distinguish the texture of jadeite by lighting?

With the help of a flashlight, you can tilt at the jade when you look at it, about 45~70 degrees, so that under the irradiation of light, you can clearly see what kind of structure is inside the jade.

After grinding, jadeite can be seen to be true and false. If the jade is really under the light, the texture will be clearer, and you can see the impurities and cotton wool inside. The texture of fake jadeite is too uniform, without impurities, and it is vague.

To identify jadeite by light is to illuminate the interior of jadeite by spotlight, observe its structure, grain and whether there are bubbles, or observe it by violet light.

Jadeite can be identified by light. Real jadeite is transparent, impurities are clearly visible, and fake jadeite is turbid, so the interior can't be seen clearly. You can also look at the color, real jade can see the color root, fake jade color is very uniform.

How to distinguish jadeite under the light: listen to the sound. Tap the natural jade gently to make a crisp and pleasant sound, and if it is artificially processed, it will make a dull sound; Look at the color. Natural jadeite has natural color, uneven distribution, prolonged green trend and generally no fluorescence; Look at the polished surface.