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? sound-alikes, entitled "The "What Time Is Love?" Story". "What Time Is Love?"'s European acclaim also contributed towards The KLF's change of musical direction following their abortive film project, "The White Room". As Drummond had predicted, the "Pure Trance" release received little attention from the music press. However, upon the release of "The "What Time Is Love?" Story", "Q Magazine" hailed the track as "a whirling house stomper ... not so much of a tune but a good beat". A 1990 version subtitled "Live at Trancentral" was the first of The KLF's upbeat "Stadium House Trilogy" and the single that introduced