About: http://webisa.webdatacommons.org/284014157

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	The surface of the colored optic crystal is smooth and the inclusions such as swirls or bubbles are absent.
http://www.w3.org/ns/prov#wasQuotedFrom	crystalartusa.com