These three fragments come from an amulet known as a menat. The menat, or counterweight to a broad collar, was sacred to the goddess Hathor. It was a popular protective amulet,and large numbers were found in the Nubian royal tombs. Most examples, like this one, were made of bluish-green faience.
From Nuri, pyramid 1 (tomb of Taharqa). 1916: excavated by the Harvard University–Boston Museum of Fine Arts Expedition; assigned to the MFA in the division of finds by the government of Sudan.
Harvard University—Boston Museum of Fine Arts Expedition