Jadeite is a precious gemstone that is highly sought after for its unique color and texture. However, due to its high price, many unscrupulous businessmen will use dyeing, glue injection and other means to make fake jadeite. Therefore, identifying the authenticity of jadeite has become a problem that buyers must face. Among them, violet lamp is a common identification method. The following is an introduction to how to identify the authenticity of jadeite with purple light.
First of all, we need to understand the composition of jadeite. Jadeite is mainly composed of minerals such as jadeite, omphacite, and sodachrome pyroxene, which emit different fluorescence reactions when exposed to ultraviolet light. Therefore, the authenticity of jadeite can be judged by the irradiation of the purple lamp.
Next, let's start with violet light identification.
1.Preparation tools: violet lamp, jade ornament, white cardboard or white porcelain plate.
2.Place a white cardboard or white porcelain plate on the table and place the jade ornament on top.
3.Turn on the purple light and point it at the jadeite jewelry to observe its fluorescent reaction.
4.When observing fluorescence reactions, the following points need to be noted:
Real jadeite fluoresces in lilac or blue under violet light, while fake jadeite does not fluoresce or fluoresce in other colors.
The fluorescence reaction of real jadeite is relatively uniform, while the fluorescence reaction of fake jadeite will have irregular distribution of patches and spots.
Real jadeite will have some fine cracks or blemishes under the violet light, while fake jadeite will have no or few cracks and blemishes.
5.If it is found that the fluorescence reaction emitted by the jadeite jewelry under the violet light does not match the characteristics of the real jadeite, then the jadeite jewelry can be judged to be a fake.
In addition to violet lamp identification, there are other identification methods. For example:
1.Hardness test: The hardness of real jadeite is high, and it is not easy to leave marks when scratched on the surface with hard objects, while fake jadeite is softer and easy to leave scratches.
2.Weight test: Real jadeite is denser and will feel heavy in your hand, while fake jadeite is relatively light.
3.Bubble observation: Under a magnifying glass, there are fewer bubbles inside the real jadeite and the size is inconsistent, while the fake jadeite will have bubbles of the same size.
4.Thermal conductivity test: Real jadeite has a high thermal conductivity, and there will be a sound when tested with a thermal conductivity meter, while fake jadeite will not make a sound or make a small noise.
It is important to note that different species of jadeite also behave differently under violet light. Therefore, when using purple lamp to identify jadeite, it is necessary to combine other identification methods for comprehensive judgment. At the same time, it is best to choose a reputable merchant or brand when buying jadeite to ensure that you are buying real jadeite.