The difference between nephrite and jade

We often hear names such as "Hetian jade", "Taiwan jade", "Canadian jade"; and "羊脂白玉", "Jasper", "Sapphire", "墨玉", etc., which belong to mineralogy A collection called "nephrite". "Soft jade" has not been seen in ancient Chinese classics, and it is derived from modern mineralogy. Nephrite is a special collection of hornblende minerals. According to its color, nephrite can be divided into: white jade, sapphire, jasper, ink jade, topaz, sugar jade and other important varieties. The differences between nephrite and jade are:

1. The color of nephrite is relatively uniform, with white, dark green, black and green, etc., no fresh green.

2. Soft jade is oily and lustrous, no green.

3. The proportion of nephrite (3.00) is slightly lower than the proportion of jadeite.

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