Only Kings, Queens and Gods were allowed to carry this symbol. The ankh is the Egyptian sign of life and indicates that the King or God holding it has the power to give life or take it away from lesser mortals. coffeeoath.com
Tree of Life, Djed, and Ankh - "Ankh" - symbol of life - thoracic vertebrae of a bull, "Djed" - symbol of stability - base or sacrum of a bull's spine, "Was" - symbol of power and dominion - a staff made from a dried bull's penis.
The ankh has its roots in ancient Egypt and is the symbol of life. There are many theories as to its origins - possibly representing the male and female forms, the goddess Isis, the Nile, or even a sandals strap!
Relief of Amenhotep III in his chariot. God Nekhbet (vulture) is depicted hovering with her wings spread above the royal image, clutching an ankh (symbol of life) in her claws. Found in Temple of Merneptah (he used stones and reliefs from the 150 year older nearby Temple of Amenophis III), now in Cairo Museum, Egypt.