About: http://webisa.webdatacommons.org/400266806

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	Tourmaline is commonly subject to enhancement processes or treatments such as heating, irradiation and impregnation with resin or oil, which may not be permanent and may require special care.
http://www.w3.org/ns/prov#wasQuotedFrom	kay.com