diamond segment for multi 6.5 The manufacturer tells you that diamond, commonly known as "diamond", is a mineral composed of carbon elements. It is an allotrope of graphite with a chemical formula of C. It is also the original body of common diamonds. diamond segment for multi 6.5 The manufacturer tells you that diamond is the hardest substance naturally occurring in nature. Graphite can form synthetic diamonds under high temperature and high pressure. Diamond has a wide range of uses, such as handicrafts, cutting tools in industry, and it is also a precious gemstone.

diamond segment for multi 6.5 The manufacturer tells you that graphite and diamond are both simple carbon elements, and their chemical properties are exactly the same, but diamond and graphite are not the same substance, they are allotropes composed of the same elements. The difference is the physical structure characteristics.
The chemical formula of both is C.
diamond segment for multi 6.5 The manufacturer tells you that the regular hexagon formed between graphite atoms is a flat structure and is in the shape of a sheet.
diamond segment for multi 6.5 The manufacturer tells you that there is a three-dimensional regular tetrahedron structure between diamond atoms.
Comparison of the melting points of diamond and graphite:
The melting point of diamond is 3550°C, and the melting point of graphite is 3652°C to 3697°C (sublimation). The melting point of graphite is higher than that of diamond.
diamond segment for multi 6.5 The manufacturer tells you that from the inside of the lamellae, graphite is an atomic crystal; from the perspective of the lamellae, graphite is a molecular crystal (in general, graphite should be a mixed crystal); and diamond is an atomic crystal . diamond segment for multi 6.5 The manufacturer tells you that the melting point of graphite crystal is higher than that of diamond, which seems incredible, but the bond length of the covalent bond in the graphite crystal layer is 1.42×10-10m, and the bond length of the covalent bond in the diamond crystal is 1.55 ×10-10m. The same is a covalent bond, the smaller the bond length, the greater the bond energy, the stronger the bond, the harder it is to break it, and more energy needs to be provided, so the melting point should be higher. (The main reason is that the atomic crystal properties of graphite cause its melting point to become higher).