Assertion: opal | /r/AtLocation | wide range
Facets:
value: to opaque
type: OTHER
value: in colors
type: OTHER
Source sentences:
text: Opal is found in a wide range in colors that include white, light blue, green, grey, brown, red, yellow, violet and black.
text: Opals are found in a wide range from transparent to opaque, the former being the most valuable.