Assertion: stone's color | /r/CapableOf | range to gray
Facets:
value: from green
type: OTHER
value: from indigo
type: OTHER
value: from blue
type: OTHER
value: from black
type: OTHER
Source sentences:
text: It has a triclinic crystal structure and its' flat, blade-like crystals come in colors ranging from blue, indigo, green, black, to pink, white, yellow or gray.