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
What Time Is Love? riff from "What Time Is Love?". In 1993 "What Time Is Love?" was covered by U.K. based American Noise/Art Rock band The God Machine. The track appeared as a B- side on their limited silver vinyl "Home" single and a promo CD. In 1997 a trance cover-version was released by German producer Talla 2XLC and in 1998 Choci and Mark Sinclair released their own hard trance reworking entitled "What is Love?". Reviewing Drummond's book "45" for "The Observer" in 2000, Steven Poole labelled "What Time Is Love?" an "epic pop masterpiece". "The Observer" also described the "Pure Trance Original" as