About: http://webisa.webdatacommons.org/152898699

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	Unless the light source is nearby, such as from a street light, the crystals need to be slightly tipped toward the viewer in order to be seen.
http://www.w3.org/ns/prov#wasQuotedFrom	usra.edu