Diamond them with diamonds. Much more recently (tens to hundreds of million years ago), they were carried to the surface in volcanic eruptions and deposited in igneous rocks known as kimberlites and lamproites. Synthetic diamonds can be grown from high-purity carbon under high pressures and temperatures or from hydrocarbon gas by chemical vapor deposition (CVD). Imitation diamonds can also be made out of materials such as cubic zirconia and silicon carbide. Natural, synthetic and imitation diamonds are most commonly distinguished using optical techniques or thermal conductivity measurements. Diamond is a solid form of pure carbon with its atoms arranged in a
Element Six vapour deposition technology opened the opportunity to synthesize diamond films and a new raft of application areas became possible. In 2002, the company changed its name to Element Six and its business focus moved towards building an enterprise based on advanced material applications for increasingly sophisticated engineering customers backed by global technical support and a strong research and development organization. In 2013 Element Six opened the world’s largest and most sophisticated synthetic diamond research and development facility. The Global Innovation Centre, near Oxford, UK develops a pipeline of innovative synthetic diamond and related supermaterial products for customers, in industries from