The menat, or counterweight to a broad collar, was sacred to the goddess Hathor. It was a popular protective amulet,and large numbers were founf in the Nubian royal tombs. Most examples, like this one, wee made of bluish-green faience.
Gebel Barkal B 901; 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