THE BASIC PRINCIPLES OF CRYSTAL

Not all crystals are Similarly crystalline. There tend to be impurities, and also the ionic & covalent between molecules can build vastly unique constructions outside of the identical product. An incredible illustration of this are diamonds and graphene.无色水晶以晶莹美丽、洁净透明着称。衡量无色水晶主要看它的纯度，越