Read Edit View history 刚玉 gāngyù corundum Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 刚玉/剛玉 · gāngyù · corundum 2026/03/04 刚玉 / 剛玉 gāngyù corundum corundum (mineral) 红宝石和蓝宝石都是刚玉的变种。 created sense Mar 4, 2026, 02:25 AM