The method successfully reproduced the distinctive crystal structures of both carbon (graphite and diamond) and silicon dioxide (low-quartz, low-cristobalite, and coesite). It worked. However ...

ROCK crystal, quartz, the common crystallised form of dioxide of silicon SiO2, is, from many points ... the most instructive example of crystalline structure known to us. “What is a crystal?” ...

successfully reproducing the unique crystal structures of carbon (graphite and diamond) and silicon dioxide (low-quartz, ...