Assertion: opal's play | /r/HasProperty | reduced
Facets:
value: visibly
type: MANNER
Source sentences:
text: This “old” technique (or similar approaches, all of which are still used today) affects only the surface and is easy to detect simply by applying a little saliva to the surface of the stone: if the fiery play of color is visibly reduced when wet but then returns to its more fiery character when dry, you know it is “smoked.