Diamond Diamond Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. At room temperature and pressure, another solid form of carbon known as graphite is the chemically stable form, but diamond almost never converts to it. Diamond has the highest hardness and thermal conductivity of any natural material, properties that are utilized in major industrial applications such as cutting and polishing tools. They are also the reason that diamond anvil cells can subject materials to pressures found deep in the Earth. Because the arrangement of atoms in diamond is extremely
Crystal habit (foliated/lamellar (layered), dendritic, bladed, acicular, lenticular, tabular (tablet shaped)). Crystal habit In mineralogy, crystal habit is the characteristic external shape of an individual crystal or crystal group. A single crystal's habit is a description of its general shape and its crystallographic forms, plus how well developed each form is. Recognizing the habit may help in identifying a mineral. When the faces are well-developed due to uncrowded growth a crystal is called "euhedral", one with partially developed faces is "subhedral", and one with undeveloped crystal faces is called "anhedral". The long axis of a euhedral quartz crystal typically has a six-sided