One stylized eye of Horus (wedjat) bead. It has a flat back and is pierced side to side.
From Giza, G 7000 SW XXVI (G 7000 SW 26), chamber debris. 1925: excavated by the Harvard University–Museum of Fine Arts Expedition; assigned to the MFA in the division of finds by the government of Egypt.
Harvard University—Boston Museum of Fine Arts Expedition