Refers to the mineral composition of emerald crystal surface and cleavage plane of When the composition of the mineral particles thick jade, particularly evident.
是指组成翡翠的矿物晶面及解理面在翠面的片状闪光。当组成翡翠的矿物颗粒粗大时，特别明显。
2
Mineral powders are good crystalline, and they break along the cleavage plane when they are comminuted, which cause the mineral powders have flat surfaces and sharp edge angles.