The Three Treasures refer to the 'Yata no Kagami' (the eight-span mirror), the 'Yasakani no magatama' (a comma-shaped jewel), and the 'Ama no Murakumo no Tsurugi' ('Kusanagi no tsurugi') (the sacred sword).
三種の宝物とは、「八咫鏡」・「八尺瓊勾玉」・「天叢雲剣」（「草薙剣」）のこと。