Assertion: graphite | /r/HasProperty | small
Facets:
value: in size
type: OTHER
Source sentences:
text: Graphite can be converted into diamonds by the action of high temperature (~ 20000 C ) and high pressure (100000 atmosphere) in the presence of transition metals (such as platinum).The artificial diamonds, however, are small in size and generally grey in colour and hence cannot be used as gems.