About: http://webisa.webdatacommons.org/410681203

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	As far as I understand, these stones are some particularly clear quartz... which should make having it cut fairly straight forward.
http://www.w3.org/ns/prov#wasQuotedFrom	gemologyonline.com