Definition of quartz
The word "quartz" uses 6 letters: aqrtuz.
QUARTZ is playable in:
n. - A form of silica, or 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. 2