About: http://webisa.webdatacommons.org/87519663

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	Natural diamonds are pure carbon, but may contain impurities, such as nitrogen, which creates yellow diamonds, or boron, which creates blue gems.
http://www.w3.org/ns/prov#wasQuotedFrom	stauer.com