Assertion: stone | /r/CapableOf | show dramatic color change
Facets:
Source sentences:
text: Stones that show a dramatic color change and strong colors (e.g. red-to-green) are rare and sought-after, but stones that show less distinct colors (e.g. yellowish green changing to brownish yellow) may also be considered “alexandrite” by gem labs such as the Gemological Institute of America.