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Thought By Theophrastus To Be A Form Of Permanent Ice A Silicious Piezoelectric Mineral Such As The Purple Amethyst Smoky Brown Cairngorm Or The Yellow Citrine Crossword Clue

There is 1 exact and 162 possible answers.
We've checked our database and believe the answer is QUARTZ which was last seen in the Telegraph Giant General Knowledge crossword.
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We think the answer to this crossword clue is: QUARTZ

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99%6Exact Match!
noun

• colorless glass made of almost pure silica

• 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

58%12 Stones like amethyst or citrine
adjective satellite

• used of gemstones having less commercial value than precious stones

53%4 Siliceous gem with kaleidoscopic colours said by Pliny to encompass the blue of sapphire, the green of emerald, the purple of amethyst, the red of ruby and the yellow of topaz
noun

• a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones

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Clue Last Found In...

Source #Number Answer
Telegraph Giant General Knowledge18 Mar 2023 Across 57
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