PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In most countries including the US, jewelry is seldom made from gold of a higher purity than 18kt as it is too soft and not suitable for the purpose of everyday usage. 18kt gold is therefore one of the highest purities in which jewelry is commonly available and consequently is a very valuable form of gold jewelry.
http://www.w3.org/ns/prov#wasQuotedFrom
  • howmuchisgoldworth.net