Below are possible answers for the crossword clue Hard rock.
7 letter answer(s) to hard rock
GRANITE
plutonic igneous rock having visibly crystalline texture; generally composed of feldspar and mica and quartz
something having the quality of granite (unyielding firmness); "a man of granite"
6 letter answer(s) to hard rock
MARBLE
a hard crystalline metamorphic rock that takes a high polish; used for sculpture and as building material
a sculpture carved from marble
a small ball of glass that is used in various games
paint or stain like marble; "marble paper"
QUARTZ
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
colorless glass made of almost pure silica
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