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 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.

In December 2018, a yellow diamond weighing 552 carats was unearthed in Canada, making it the largest diamond found in North America.