Diamond example sentences

In elemental state it is available as coal, graphite and diamond; however, in combined state it is present as metal carbonates, hydrocarbons and carbon dioxide gas (0.In diamond, each carbon atom is bonded to four other carbon atoms forming a rigid three-dimensional structure.It is the world's largest producer of diamonds, gold and platinum.Interestingly enough, a fourteenth-century text, the Lilatilakam, dealing with grammar and poetics, was composed in Manipravalam – literally, “diamonds and corals” referring to the two languages, Sanskrit and the regional language.Diamonds can be synthesised by subjecting pure carbon to very high pressure and temperature.Diamond and graphite are two well-known crystalline forms of carbon.It occurs in the elemental form as diamonds and graphite.In the seventeenth century Jean Baptiste Tavernier, a diamond merchant, estimated that the horse trade at Kabul amounted to Rs 30,000 annually, which was a huge sum in those days.Diamond mines of South Africa and discovery of oil in the Middle east lead to settling of people in these areas.It is a leading producer of gold, diamond, iron ore, tin and nickel.Both diamond and graphite are formed by carbon atoms, the difference lies in the manner in which the carbon atoms are bonded to one another.In diamond each carbon atom undergoes sp3 hybridisation and linked to four other carbon atoms by using hybridised orbitals in tetrahedral fashion.These synthetic diamonds are small but are otherwise indistinguishable from natural diamonds.Mining of diamond and gold in South Africa led to the establishment of trade ties with Britain and gradually South Africa became a British Colony.It is very difficult to break extended covalent bonding and, therefore, diamond is a hardest substance on the earth.