In fact, ultraviolet lamp is a sharp weapon to detect fake jadeite, but it can't detect fake jadeite made of other materials.
Polishing powder is used in the processing of jadeite, and the residue of polishing powder will fluoresce under purple light. Some jadeite certificates will be marked with the words "polishing powder residue".
White jade also has an optical phenomenon, which is poor in quality, that is, it will easily reflect light. Especially when the white jadeite is illuminated by purple light, then the purple light will easily penetrate at this time.
Usually purple light hits the jade, showing its original color. Because natural jadeite doesn't respond to ultraviolet rays, nothing will change when it is irradiated with purple light. However, if there are jadeite B or B+C goods, they will fluoresce under purple light.
Is it true that Bai Bing bracelet will turn red under violet light? Solve and learn jade identification. ...
1, bracelet red with purple light. It's a little red because it should be dirty and then injected with glue to have such a fluorescent reaction.
This photo is not fake. Natural jadeite has such a color. This purplish red is called violet in the jade industry. If a piece of jade has violet and other colors at the same time, it is often spring or spring-colored.
3. A purple pyloric bracelet you shot turned red under the purple light. Is it true?/You don't say. It is true that purple light will turn red, and transparency is true.
4. Charpy filter observation: under incandescent lamp observation, the color is red, indicating that it is artificially colored; If the color does not change to red, there are two possibilities at the same time: natural color or dyeing, which need to be further identified by other methods.
5. Ultraviolet rays and fluorescent agents are blue under purple light, and some emerald amber will also be blue! Plastic is purple, others will appear red, yellow and so on. In general, the color of high-ice jadeite is purple under ultraviolet light, because high-ice jadeite can only appear purple under the irradiation of purple light source.
Violet emerald purple light turns pink. Is it pickled?
After acid washing to remove impurities, B and C jadeites can be "brand-new" after dyeing and glue injection. The jadeite treated by these methods will have a very obvious fluorescence reaction under purple light, and even after the purple light is turned off, pale yellow fluorescence can still be seen on the surface. These jadeites are not recommended for purchase.
Oh, my god, this full of fluorescence is obviously something that has been pickled and filled with glue. From the light transmission diagram, there is an obvious silk mesh structure, which is undoubtedly pickled and filled with glue. The fluorescence reaction is due to the internal filling of glue.
Pickling and bonding become what we call B jadeite or B+C jadeite; True jadeite does not fluoresce under ultraviolet light, while epoxy resin as filler of B jadeite fluoresces under fluorescent light. Therefore, the jadeite dyed by acid washing can be identified by ultraviolet lamp.
Fluorescence reaction means that under the irradiation of ultraviolet lamp, the object emits blue or green light, which is fluorescence reaction. This is a phenomenon that can be observed with the naked eye.
Because grade B jadeite is soaked with chemicals, there are a lot of resin chemicals left in jadeite, so there will be fluorescence under the irradiation of purple light. The filler of B+C jadeite is also epoxy resin, which will fluoresce under fluorescent lamp.
Visually, the whole jade is gelatinous, and the color is obviously wrong under purple light. It may be that there are many cracks in the original stone after pickling, which is a B-grade jadeite optimized by glue injection. In fact, it may be waxy jade, which is salted into ice and is not recommended to be worn on the body.
Which is better for plants to fill light bulbs?
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Normal color effect under violet light
Beeswax fluoresces under violet light. Copal fat hardly changes color under ultraviolet short wave. Or it only shows a faint green light, while Baltic beeswax and Dominican beeswax show blue or sky blue fluorescence under ultraviolet light, no matter what the primary color is.
When purple light irradiates ruby, due to the lack of red light, the color of ruby will darken and the fluorescence effect will be reduced; When illuminated by natural emeralds, we can see that the color of gemstones tends to be dark gray; Zirconia will show light yellow fluorescence under ultraviolet irradiation, which is helpful for appraisers to distinguish.
Different quality beeswax will have slightly different colors under purple light. White honey will be blue, and Jin Po will be light blue with a little green.
Plastic is purple under violet light. If no fluorescent agent is added to the plastic, it means that the plastic has no fluorescent reaction. If a fluorescent agent is added, there is another feature that can be distinguished. Illuminate amber and plastic surfaces with purple light.
Because the light emitted by ultraviolet lamps is mainly ultraviolet light, but there is also a small amount of visible purple light. Understand that when purple light shines on white clothes, it will be reflected by clothes (white objects reflect all colors of light), so people will see that clothes emit purple light.