About: http://webisa.webdatacommons.org/423161680

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 variability is well exemplified in the several color varieties of the mineral corundum, of which the best known are the ruby (red), and the sapphire (blue and other colors).
http://www.w3.org/ns/prov#wasQuotedFrom	nevada-outback-gems.com