The representation of the turtle has existed from Predynastic times. It was considered an ambiguous force, reflecting their position as creatures of both land and sea. They were often considered the enemy of the sun-god Ra. The turtle’s secretive existence within it’s shell a natural opposition for the rising and illuminating sun. Turtles, as a sea creature, were considered a type of fish and were associated with the latter’s impurity. In the case of the turtle, rather than imbibe the wearer with its negative apotropaic properties, the turtle was meant to act a localised force against such qualities. It was thus worn to defend health and life. It was rarely worn however as an amulet past the New Kingdom period.
To find out more about the use of carnelian in Ancient Egyptian culture please see our relevant blog post: The Significance of Carnelian in Ancient Egyptian Culture.