Diamond example sentences

These two different structures result in diamond and graphite having very different physical properties even though their chemical properties are the same.Diamonds can be synthesised by subjecting pure carbon to very high pressure and temperature.?f H values of diamond and fullerene, C60 are 90 and 3 1 kJ mol–1, respectively.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.Diamond and graphite are two well-known crystalline forms of carbon.It is a leading producer of gold, diamond, iron ore, tin and nickel.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.Diamond mines of South Africa and discovery of oil in the Middle east lead to settling of people in these areas.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.These synthetic diamonds are small but are otherwise indistinguishable from natural diamonds.In diamond, each carbon atom is bonded to four other carbon atoms forming a rigid three-dimensional structure.It is very difficult to break extended covalent bonding and, therefore, diamond is a hardest substance on the earth.South America also has large deposits of gold, silver, zinc, chromium, manganese, bauxite, mica, platinum, asbestos and diamond.Minerals are found in varied forms in nature, ranging from the hardest diamond to the softest talc.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.