Assertion: azurite's color | /r/HasProperty | white
Facets:
Source sentences:
text: Color is white when absolutely pure, and green when nearly so, the color darkening with increase in the amount of iron present. .
text: Color is white or none, though shades of gray, red, orange, yellow, green, blue, violet, brown, or even black can occur when the mineral is charged with impurities.