About: http://webisa.webdatacommons.org/374952878

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, has a high refractive index and is chemically resistant, all properties that make the stone ideal for a variety of industrial applications such as lasers, computer chips and drills.
http://www.w3.org/ns/prov#wasQuotedFrom	post-gazette.com