A goods are pure natural jadeite, only carved and polished. There is no chemical treatment, no artificial forgery such as high temperature and high pressure. It is a natural color, which is called "positive color" or "true color" without dyeing or electric color.

The characteristics of jadeite are as follows. Having natural colors, not dyed or colored electrically, is called "positive color" or "true color". Visually, the texture is delicate, the color is soft and the stone lines are obvious; Slight impact, crisp and pleasant voice; It feels very heavy and is obviously different from other stones.

Its characteristic is that the density should be 3. 32-3。 Between 34g/cm3, the refractive index should be 1. 66, glass luster, magnified observation of fiber interwoven structure, no fluorescence under ultraviolet lamp. The appraisal certificate indicates "jade" or "natural jade".

The following is the identification method of a jadeite:

At first glance: clear background color, less impurities and delicate texture. The purer the color, the higher the value, and some can be priceless.

Two knocks: like a bracelet, if it is a high-end product, it will make a crisp "Tintin" sound, which is very penetrating. Defective products will make a dull "get" sound.

Three lessons: Because the value of jadeite products varies greatly, it is inevitable to make mistakes only by naked eyes. At this time, it depends on the appraisal certificate.

Extended data:

Jade, also known as jadeite, jadeite and Burmese jade, is a kind of jade. The correct definition of jadeite is fibrous aggregate composed of pyroxene minerals, mainly jadeite minerals. . But jade is not equal to jade? . Jadeite is a kind of stone polycrystalline aggregate that reaches the jade level under geological action. It is mainly composed of jadeite or jadeite, sodium (sodalite) and sodalite (omphacite), and may contain amphibole, feldspar, chromite and limonite.

Participation information:

Jade-Baidu Encyclopedia