The natural seed material is round and round, and has a good roundness, due to the long process of formation of hundreds of millions of years. The jade is firm and delicate, and the grease is strong. It is a high-quality jade variety in jade. Imitation seed is mainly artificially dyed with organic or inorganic dyes. The color of Hetian jade seed material is very unnatural, too floating and rich.
Imitation seed materials are generally identified by their color, gloss, shape, crack, hardness and toughness characteristics and instrument testing.
Imitation of the color of Hetian seed
The color of the imitation seed material is mainly dyed by inorganic and organic dyes through dyeing methods. The color is too rich, floating, unnatural, and has no gradual transition morphology, and is enriched along the crack or ridge line. The two layers of color distribution have a strong color difference, one side is bright leather color, and the other side is pure meat quality. The surface is etched, often white or yellowish white, similar to white vermiculite, with a fluorescent reaction and visible etch marks.
Imitation seed shape
Uniform shape, perfect appearance: natural seed materials are mostly small in size, smooth and full, mostly drop-shaped, elliptical shape. In order to make the imitation seed material achieve this effect, the imitation jade will be put into the machine to wear it. This kind of running-in may smooth the edges of the jade surface, but the shape is even and the appearance is too perfect. The cracks in the real seed material are very smooth and smooth, and it is difficult to imitate it by hand.
"sweat pores" identification
The fake Hetian jade seed material is a small piece of the lower material of the mountain material, Qinghai material, Russian material and jade jade material, which is placed in a roller machine and ground into an oval shape, resembling a seed material. Therefore, there is a trace of scratch on the epidermis, there is no "sweat pores" or "small sand eyes" in the natural state. The natural Hetian jade seed material has a layer of "sweat pores" such as pores on the skin of the human body, and the imitation Hetian jade seed material is dyed after the mountain material is polished, so there is no such "sweat pore".
Dentian jade density
The overall density of the imitation is lower than the density of Hetian jade. The density of imitations with iron bars inside is relatively large; the density of internal concrete and stone imitations is relatively low. Although the density of the imitation is lower than that of Hetian jade, it is generally difficult to distinguish by density due to the large block size.
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