Assertion: opal's play | /r/HasProperty | visible
Facets:
value: with strong color patterns
type: OTHER
value: in the interior of the stone
type: LOCATION
value: from all angles
type: MANNER
value: on the surface
type: LOCATION
Source sentences:
text: Precious Opal where the play of colour is visible only when a light source is behind the stone.
text: Transparent to translucent Precious Opal where play of colour is visible on the surface and in the interior of the stone.
text: Ascertain the quality of iridescence; the play of light should be visible from all angles with strong color patterns representing a range of color.