Assertion: fire opal | /r/CapableOf | found in crack
Facets:
Source sentences:
text: Schütz notes that fire opal, found in cavities and cracks of volcanic deposits, owes its unique color and brilliance to traces of iron oxide.
text: Schütz notes that fire opal, found in cavities and cracks of volcanic deposits, owes its unique color and brilliance to traces of iron oxide.