About: http://webisa.webdatacommons.org/56416331

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Diamond is the hardest known substance, with a Mohs hardness of 10, which varies slightly with the orientation of the crystal.
http://www.w3.org/ns/prov#wasQuotedFrom	dendritics.com