<http://webisa.webdatacommons.org/prov/116981104>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/150085877> .
<http://webisa.webdatacommons.org/150085877>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<awesomegems.com> .
<http://webisa.webdatacommons.org/prov/421106584>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/150085877> .
<http://webisa.webdatacommons.org/150085877>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/150085877>	<http://www.w3.org/ns/prov#value>	"Glass: Indicates the stone has been heated to moderate temperatures (reportedly 900???1,400???C) to remove potential impurities from the fractures and improve color, then the stone is mixed with powders that are composed primarily of lead and silica but may also contain sodium, calcium, potassium, and metal oxides such as copper or bismuth." .
<http://webisa.webdatacommons.org/prov/31221552>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/150085877> .