1, the difference of crystal particle shape

There are essential differences in grain shape between them. The mineral grain structure of nephrite is sugar-like, while jadeite is columnar or fibrous. Jadeite has a unique "emerald", but nephrite does not have this characteristic, so it can be judged whether jadeite is nephrite or nephrite from the reflection surface or light.

2. Gloss is the difference between jadeite and nephrite.

Gloss is one of the biggest differences between jadeite and nephrite. Anyone with a little experience can judge nephrite and jadeite by reflecting light. The surface of nephrite presents a greasy luster, which is inconsistent in strength and soft and moist, so people understand it as moist jade. The reflective luster of jadeite presents a hard glass luster, revealing a cold chill, so it is called cold water jade.

3. Difference of specific gravity

The proportion of nephrite (3.00) is slightly lower than that of jadeite (3.33).

4, the difference of refractive index

The refractive index of nephrite (1.62) is also slightly lower than that of jadeite (1.66).

The difference between crystal and diamond is: different compositions, different uses and different hardness.

First, the composition is different.

1, crystal: mineralogically belongs to the chronological family. The main component is silicon dioxide.

2. Diamonds are minerals made of carbon, and they are allotropes of carbon.

Second, the use is different.

1, crystal: carved for viewing.

2. Drilling holes from stones: After processing, handicrafts and cutting tools are used in industry.

Third, the hardness is different

1, crystal: Mohs hardness 7, that is, Mohs hardness, which is equivalent to the hardness of a steel file.

2. Diamond: Mohs hardness 10, new Mohs hardness 15, microhardness 10000 kg/mm2, microhardness is 1000 times higher than that in time, and 150 times higher than that in corundum.

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