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
<noun.substance>
<noun.substance>
| quartz |
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semantic pointers
hyponym
quartz crystal
rock crystal, transparent quartz
cairngorm, smoky quartz
amethyst
chalcedony, calcedony
citrine
rose quartz
sunstone, aventurine
topaz, false topaz, common topaz
substance meronym
hypernym