Radical 石

stone
Radical Radical 石 means "stone". Kanji with radical 石: 研 (grind), 破 (break; destroy), 確 (assurance), 岩 (boulder), 砂 (sand), 硬 (stiff), 磨 (grind), 磁 (magnet), 砲 (cannon), 碑 (tombstone)...
石・漢字（Kanji with 石)
研grind破break; destroy確assurance岩boulder砂sand硬stiff磨grind磁magnet砲cannon碑tombstone礎cornerstone砕smash硫sulphur硝nitrate碁Go礁reef