About: http://webisa.webdatacommons.org/136339893

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	Technically, tenebrescence is an unstable color caused by low energy artificial irradiation (forming a color center) from the UV light source.
http://www.w3.org/ns/prov#wasQuotedFrom	gemologyproject.com