Assertion: chalcedony | /r/HasProperty | fibrous microcrystalline
Facets:
Source sentences:
text: Chalcedony is a fibrous microcrystalline (also known as Cryptocrystalline) variety of silica that contains small crystals of quartz.
text: Chalcedony is a fibrous microcrystalline (also known as Cryptocrystalline) variety of silica that contains small crystals of quartz.
text: Chalcedony is a fibrous microcrystalline (also known as Cryptocrystalline) variety of silica that contains small crystals of quartz.