Diamonds В4 Diamonds are a symbol of luxury for many people. People _____ VALUE diamonds as attractive jewellery for

Diamonds are a symbol of luxury for many people. People have valued diamonds as attractive jewellery for around 2,500 years.The Indians used them to decorate religious icons and it seems the ancient Chinese gave their axes a sharp edge using diamonds.Diamond is the hardest substance on Earth, meaning that only another diamond can be used to cut a diamond.Diamonds consist of carbon and usually they are found deep underground in mines, but you might get lucky and see them on the surface.Mining companies in places like Africa make a lot of money from diamonds.However, the miners themselves are often quite poor.The value of a diamond is judged on four criteria, known as the four Cs: carat (or size), clarity, colour and cut.The heaviest diamond ever found was the Cullinan diamond,which was discovered in 1905 and weighed 621 grammes.