About: http://webisa.webdatacommons.org/190408633

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 a gemstone noted for the large and unsurpassed range of colors in which it occurs, but blue is one of the rarest and most valuable color sought by collectors and connoisseurs throughout the world.
http://www.w3.org/ns/prov#wasQuotedFrom	tumblr.com