The insignia of the great Japanese Empire is composed of three treasures which have been considered sacred, and guarded with jealous care from time immemorial. These are the Yatano-no-Kagami or the Mirror of Yata, the Yasakami-no-Magatama or the Jewel of Yasakami, and the Murakumo-no-Tsurugi or the Sword of Murakumo.