Assertion: opal | /r/HasProperty | natural
Facets:
Source sentences:
text: It is represented as natural, untreated opal, and this claim — that the opal is natural and it’s color is natural — has been “confirmed” by several laboratories.
text: It is represented as natural, untreated opal, and this claim — that the opal is natural and it’s color is natural — has been “confirmed” by several laboratories.
text: When you view my Lightning Ridge Collection, you can be sure the opals are natural, non-treated, ethically mined and sourced from Lightning Ridge, Australia.