the three sacred treasures ( 三 種 の 神 器, sanshu no jingi / mikusa no kamudakara ) are the imperial regalia of japan and consist of the sword kusanagi no tsurugi ( 草 薙 劍 ), the mirror yata no kagami ( 八 咫 鏡 ), and the jewel yasakani no magatama ( 八 尺 瓊 勾 玉 ) 