Assertion: chalcedony's color | /r/HasProperty | arranged in band
Facets:
Source sentences:
text: Most specimens of fluorite have a single color, but a significant percentage of fluorites have multiple colors and the colors are arranged in bands or zones.
text: The commonest agates have the colors arranged in bands, but there are others, like "fortification agate" in which the colors are irregularly distributed, and still others in which the variation in color is due to visible inclusions, as in "moss-agates.