QUARTZ n.
silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors; also in cryptocrystalline massive forms varying in color and degree of transparency, being sometimes opaque.
ROMAN a.
aw. -- Roman nose, a nose somewhat aquiline. -- Roman ocher, a deep, rich orange color, transparent and durable, used by artists. Ure. -- Roman order (Arch.), the composite order. See Composite, a., 2.