About: http://webisa.webdatacommons.org/363859146

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	Other crystals and gems including Aquamarine, Blue Chalcedony, Blue Topaz, Blue Lace Agate, and Celestite have also been known to have been used in this regard.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com