柱石 zhùshí pillar and stone base Origin Definitions Defs Strokes Stroke Words Sentences Sents 绿柱石 lǜzhùshí beryl A silicate mineral of beryllium and aluminum, typically found in granite or mica, which occurs as hexagonal crystals and is used as a gemstone.红柱石 hóngzhùshí andalusite a mineral found in metamorphic rocks, used in making spark plugs and other heat-resistant ceramics