Assertion: fire agate | /r/HasProperty | iridescent agate
Facets:
value: to some people
type: OTHER
value: sometimes
type: TEMPORAL
Source sentences:
text: Fire agate (sometimes referred to as iridescent agate or rainbow agate ) - to some people, this is a non-agate variety of chalcedony; although it might be argued that its agate designation may have been based on the layered arrangement of the inclusions responsible for its iridescence, it seems more likely it was so-named as a marketplace ploy.