This amulet with a rounded top is a graphic representation of Amun, god of the wind1. The amulet intended to provide the wearer with divine dignity and majesty1 and is mostly in dark stones (serpentine, green porphyry, diorite, obsidian, etc.)1,2. Position on mummies: top of chest to low on stomach. Period: from Dynasty 26?2

Diorite? H 2.9, 1.4
Undated © 2013 Musée
du Louvre/Antiquités égyptiennes #E 18325

Undefined stone
H 3.4, W 1.5 Undated
© 2013 Musée du Louvre/Antiquités égyptiennes #E 18327

Obsidian with sun disc
H 3.7, W 1.9, D 0.7 Late Period
© 2013 Musée du Louvre/
Antiquités égyptiennes
#AF 12142

References

1Andrews C. Amulets of Ancient Egypt, 1994, pp. 80-81 and Figs. 81a,b
2Petrie W M F. Amulets, 1914, p. 17