HARD MINERAL SUCH AS AMETHYST OR CITRINE, SAY - 6 Letters

Clue	Length	Answer
Hard mineral such as amethyst or citrine, say	6 letters	quartz
Definition: 1. 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 View more information about quartz

6 letters

Definition: 1. 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

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