About: http://webisa.webdatacommons.org/220158124

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	Crystals such as diamond and sapphire may provide appropriate refractive indices and/or robustness for direct contact with substances to be detected/analyzed that may be located in extreme conditions or the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com