<http://webisa.webdatacommons.org/418928125>	<http://www.w3.org/ns/prov#value>	"Within these stones you will find an assortment colors and patterns and they range from mostly B to C grade...." .
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<http://webisa.webdatacommons.org/418928125>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<opal-trader.com> .