About: http://webisa.webdatacommons.org/252910180

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	It is the hardest gemstone except diamond, which has the hardness of 10.
http://www.w3.org/ns/prov#wasQuotedFrom	jewelinfo4u.com