This is a string of about 3,500 ring beads, and one large faience ball bead.
From Nubia, Kerma. 1145 / B. Excavated by the Harvard University-Museum of Fine Arts Expedition; assigned to the MFA by the government of Sudan.
Harvard University—Boston Museum of Fine Arts Expedition
Nubian, Classic Kerma, about 1700–1550 B.C.