About: http://webisa.webdatacommons.org/281511837

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	While the sapphire and garnet were original1y embedded in gneiss, other precious stones, such as the ruby and spinel, have been derived from the crystalline limestones (marbles), which are associated with the gneiss.
http://www.w3.org/ns/prov#wasQuotedFrom	minelinks.com