A diamond crystal comprises a tabular diamond crystal formed on a substrate by gas phase synthesis, wherein the diamond crystal has a ratio of thickness to width of from 1:4 to 1:1,000 and the surface of the substrate on which the diamond crystal has been formed and the top surface of the diamond crystal...http://www.google.fr/patents/US5576107?utm_source=gb-gplus-shareBrevet US5576107 - Diamond crystal and method for forming the same
