Do you know how to tell whether jadeite has "glue" or "fluorescence"?

In addition to the quality, water content, color, and craftsmanship of jade, there are two terms that you must know: "glue" and "fluorescence". Once you have mastered this knowledge, your understanding of jade will be elevated to a higher level!

What is fluorescence?

The fluorescence phenomenon of jade is caused by the neat and orderly arrangement of micro-crystals, which results in an obvious overall refractive index after light enters. It is the product of the high-pressure and low-temperature metamorphism of jade's mineral components. The mineral component of jade is mainly jadeite, and the quality of jade depends on the size of the jadeite crystal particles.

When the internal particles of a piece of jade are so small that they are almost invisible to the naked eye, this is the so-called "old type and fine flesh". If it is later carved into a suitable shape, fluorescence will appear. Fluorescence is an optical phenomenon. In simple terms, when jade fluoresces, it means that the refraction of light makes the entire piece of jade uneven in brightness, creating a visual contrast to the human eye. The stronger the fluorescence, the more obvious the contrast.

What is glue?

When a piece of jade looks like solidified glue at first glance, when you turn it, the light on the surface makes it look like flowing glue. The light refracted on the surface of the jade is a whole, continuous piece, so it looks like a piece of glue! When the crystal particles are very small, that is, the species is very old, if the crystals are arranged in a relatively orderly manner, they will become shiny. When the crystal particles are very small, that is, the species is very old, if the crystals are arranged in a relatively disordered manner, they will become sticky.

Not every piece of jade will have the properties of glue and luster, which is related to the stress applied to the jade during its growth process. Even glass-type jadeite and high ice jadeite may not be sticky or shiny.

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