The great king of antiquity, Khufu, had a son, Prince Quabad, who died before his father. By order of Khufu, the royal sculptor created a figure of the deceased prince from stone. The eyes of the prince statue held the secret of life and death. The left one is made of lapis lazuli - this is life, the right one is made of diorite - a black pool - hiding death in its depths. Several hundred years later, Kvabad's tomb was robbed, and the thieves tore the plates out of the stone prince's eyes. The lapis lazuli was lost, but the black plate appeared as the “Black Eye”, which had magical properties.