Assertion: precious opal | /r/HasProperty | composed
Facets:
value: of minute uniform spheres of silica
type: OTHER
Source sentences:
text: Precious opal, which shows play of color, is composed of minute uniform spheres of silica that are arranged together in an orderly three-dimensional grid, says Cody.
text: Precious opal, which shows play of color, is composed of minute uniform spheres of silica that are arranged together in an orderly three-dimensional grid, says Cody.