Bare diamonds with a clarity lower than that of SI2 are easily broken due to feather cracks. Diamonds with a purity greater than SI 1 are all slightly flawed, but they are invisible to the naked eye and will not be easily broken. After all, loose diamonds are a luxury, so be careful when wearing them.
Diamonds are commonly known as "Jin Gangzuan". That is, we often say that the original diamond is a mineral composed of carbon, which is an allotrope of carbon. Diamonds are the hardest substance in nature. Diamonds are widely used, such as handicrafts and industrial cutting tools. Graphite can form synthetic diamond at high temperature and high pressure. It is also a precious stone.
Extended data
Diamond structure is divided into: equiaxed tetrahedral cubic and hexagonal diamond.
Diamond is a simple crystal composed of carbon element formed in the deep part of the earth under high pressure and high temperature, which refers to polished diamond. Diamond is a colorless octahedral crystal, which consists of pure carbon and carbon atoms connected by tetravalent bonds. It is the hardest substance known to exist naturally at present.
Because the C-C bond in diamond is very strong, all valence electrons participate in the formation of valence bond, and there are no free electrons, so the hardness of diamond is very high, the melting point is 6900 degrees Fahrenheit, the ignition point of diamond in pure oxygen is 720 ~ 800 degrees Celsius, and in air it is 850 ~ 1000 degrees Celsius, which is non-conductive.