AN UNBIASED VIEW OF CRYSTAL

Not all crystals are Similarly crystalline. There tend to be impurities, plus the ionic & covalent between molecules can produce vastly distinctive buildings away from the same substance. An excellent 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，越纯、