About: http://webisa.webdatacommons.org/95233132

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	This process is currently used on other, less hard materials, such as rubies and sapphires, to achieve the same sharpness at a lesser cost.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com