Ultraviolet lamp. Ultraviolet lamp is an artificial ultraviolet light source. Ultraviolet is the general name of radiation with wavelength from 10nm to 400nm in the electromagnetic spectrum, and it is invisible light. Ultraviolet rays are widely used in anti-counterfeiting inspection and medical treatment. The inspection principle of ultraviolet lamp is to find out whether there is any substance that produces fluorescence reaction in the tested sample.

Purple light can identify the filled jadeite, that is, the jadeite that can identify B goods. The jadeite with fluorescence reaction under purple light must be treated; Without fluorescence reaction, it can't be proved to be real jade. Ultraviolet lamp is a sharp weapon to detect jade counterfeiting, but it is impossible to detect jade counterfeiting from other materials.

This flashlight is not a flashlight for our daily lighting, but a strong flashlight for jewelry. When buying jadeite original stone, many people will be equipped with some special tools, the most common one is a strong flashlight, which can be used to observe the characteristics of jadeite more clearly.

Is it normal for jadeite to have a little fluorescence under blue light?

These two possibilities have little influence on whether the jade itself is A goods. If you mind, you can remove it with warm water, neutral detergent, brush, and jewelry cleaning machine. After cleaning, the previous blue fluorescence will disappear after being irradiated with fluorescent light.

Jade bracelets, under fluorescent lamps, have a little fluorescence, which is not the standard for judging authenticity. I suggest you take some photos and upload them in natural light, so that I can give you detailed comments and evaluations.

We think that fluorescence is very good, and the light emitted is called fluorescence, but the fluorescence you understand should be another meaning, that is, the fluorescence generated by using polishing powder during jade processing. This is not allowed. Only those with poor quality will use polishing powder.

No, there will be a fluorescent reaction under special blue light. It must be B. A goods won't have any fluorescence.

How to identify jadeite by light

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

2. 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.

3. To identify jadeite with purple light, we must first look at fluorescence. After the real jadeite is irradiated by purple light, there will be no reaction on the surface, or there will be extremely weak fluorescence reaction.

4. To identify the authenticity of jadeite with purple light, the surface of jadeite should be cleaned first to prevent the wax attached to it from emitting fluorescence under purple light, which will affect the identification. After the jade is cleaned, it can be taken to a dark or even dark place, and then irradiated with purple light to observe the fluorescence reaction.

5. Reflected light observation The surface of the finished jadeite will be polished, and its surface will reflect light. You can see the reflection of jadeite by adjusting its angle in different light. 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.

6. Observed by strong light or light, ordinary natural jadeite has some emerald flash from mineral particles, while fakes made of glass, plastic and porcelain do not have this emerald feature.

How to distinguish jadeite by light? How to distinguish jadeite by light?

1, reflecting 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

2. 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.

3. The light of jadeite is generally white natural light, but some jadeites are particularly sensitive to light sources, so the colors presented in different light are different.

4. Transparent observation. Transparent observation refers to observing jadeite through sunlight or artificial light source. When observing jadeite in the light source, natural jadeite will show some impurities, defects, color roots and color distribution 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.

There is a blue light reaction in the blue light of jadeite.

The jadeite bracelet was irradiated by ultraviolet rays, and the crack was blue and fluorescent. But the polishing powder at the crack was not removed. Soak in warm water and brush with a soft brush. If there are many places all over the body, B goods are filled with jade.

This has little to do with jade itself. It is purely optical and appears light blue, because blue light is dispersed in jade. The wavelength of blue light. The principle is the same as why the sky is blue. The fluorescence reaction under violet light is wrong, or it is the influence of dyeing and injecting jadeite or polishing powder.

Therefore, the jade bracelet will not appear light blue under the irradiation of light, which means that the jade bracelet is dyed with B+C jade. When buying jade bracelets, you should choose a reputable merchant and ask him to issue a jade bracelet quality appraisal certificate.

Normal. The blue fluorescence of jadeite is related to the stress during the growth of jadeite. Only jadeite with good water species has fluorescence phenomenon, and a little fluorescence is normal.

Soap liquid, etc. These two possibilities have little influence on whether the jade itself is A goods. If you mind, you can remove it with warm water, neutral detergent, brush, and jewelry cleaning machine. After cleaning, the previous blue fluorescence will disappear after being irradiated with fluorescent light.

The jade bracelet I bought is light blue in some places under the light. Is it fake?

1, look at the picture, the probability is A goods (that is, true). Didn't you have a certificate when you bought it? Send it up if you have it. It's not surprising that jadeite has various colors, and it's normal that different light will show different color changes.

2. Using ultraviolet rays to irradiate the jade bracelet, the whole body is blue and purple, indicating that it is fake jade. Natural stone will not have fluorescence reaction, and natural jadeite will not shine under ultraviolet light. If it is B goods or B+C goods, there will be blue and white fluorescence. B the filler of jadeite, epoxy resin, will fluoresce under fluorescent lamp.

Hello, if you shine anything with purple light, it will show purple. However, when jade B is filled with epoxy resin, it will have obvious fluorescence performance. Note that it is really obvious fluorescence, not purple. So purple is normal and fluorescence is abnormal. Good luck.

4. This is a common way of counterfeiting in recent years. The jade bracelet itself is a real natural jade. However, it is an entry-level jade bracelet with thick seed material, thick cotton, short water head and plain color. Then apply dyeing and polishing powder to make bright colors. Therefore, this will happen when ultraviolet light is used.