PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • On the basis of such indicators as trade data and income growth rates, U.S. gemstone markets, bolstered by a strong national economy and demand among consumers with increasing personal wealth and growing discretionary income, accounted for 35% of world gem demand in 1998.
http://www.w3.org/ns/prov#wasQuotedFrom
  • mindat.org