Enter a clue or pattern or both:
The Clue
Basis for some watches (6 letter answer)
The Answer
QUARTZ
Tags
Notes
The answer QUARTZ is rarely seen, appearing only about once every 1600 puzzles.
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Definition
QUARTZ as a noun:
1. (quartz glass, quartz, vitreous silica, lechatelierite, crystal) = colorless glass made of almost pure silica
2. a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities