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Jade with collectible value:
Emerald
Look at the polished surface: the polished surface of natural jade is fine and smooth, and it has a strong glass luster with grease. If you look closely on the polished surface, you can usually see the variegated interweaving structure like a piebald. In general, the same piece of emerald The phenocryst particles are uniform in size; at the same time, micro-transparent to opaque white fibrous crystals, commonly known as "stone flowers", are visible.
Listening to the sound: Gently tapping on the natural jade, it is a kind of crisp and sweet sound, if it is artificial treatment, it will make a dull and dumb sound.
In addition, due to the high density of jadeite, there is a feeling of hitting hands when hand rubbing; the water supply of jadeite is very strong, dripping water on it, and the water droplets are raised higher.
Hetian jade
Hetian jade feels heavy and has a specific gravity of 2.9 to 3.1. When jade is aligned with the light source, Hetian jade is transparent to the naked eye. When viewed under the light, the back of the jade can be seen with fingers. The shadows are shaking. And the fake Hetian jade, even if it looks at the light, the jade looks very muddy.
Hetian jade has a high hardness and does not eat a knife. Another good way to identify it is to use a small knife to engrave a few times. If it doesn't go out, you can basically judge it as Hetian jade. If you can move it, it is probably a fake jade. . Finally, the fake Hetian jade is generally frosted in the rolling of the tool, there is often a track on the upper side, there is no "sweat pores" or "small sand eyes" in the natural state.
Dushan jade
Dushan jade has different mineral composition and structure than general jade. It is a collection of multiple colors and a variety of minerals. Among them, white minerals include plagioclase, zoisite, green minerals such as chrome mica, diopside, hornblende, black minerals such as biotite, and yellow, brown, and red minerals. The various minerals are composed of bright and complex colors, such as plaque, bean-like, striped, and banded structures. Some of the plaques are white cauliflower, green beancurd and black flowers. This is the other jade species. No.
The color of Dushan jade is complicated, and the difference of the color of Nanyang green jade is also large. There are many yellow and black color components. Observed with a magnifying glass, Dushan jade has a granular structure, and the green mineral is scaly, without the fibrous interweaving structure in the jade. The jade flower spot structure is a transparent green jade small crystal, and the green mineral in Dushan jade is scaly chrome mica, which is very different. In addition, Dushan jade has a relative density of 2.73-3.18 and a Mohs hardness of 6-6.5, which are smaller than jadeite. Dushan jade has a lustrous luster, and jadeite is glass luster and pearl luster.
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