Переводите )) diamond, graphite and zircon. a diamond is composed of nothing but carbon. though it's chemical element is carbon, like graphite, it has a regular and isometric crystal form and is usually colourless and transparent, unlice other minerals composed of carbon. zircone which is as bright as diamond, is among the brightest of gems because of its high reflectively. it is a chemical compound of metal zirconium. the pale-blue zircon is the most popular