Thoth is usually depicted as a human with the head of an ibis, but representations of him as a dog-faced baboon are also common. It is likely that amulets of Thoth in ibis-form bore funerary associations. He is responsible for knowledge, measurement, wisdom, and thought, and is also considered to have given the Egyptians their hieroglyphic writing.
Nephthys was the sister of Isis. She was usually depicted with the symbol of a house and basket on her head, as she is here. The name ‘Nephthys’ translates to “Lady of the Enclosure”, and she was often associated with the domain of the home and temple. She was thus also known as a priestess.
Lapis lazuli was considered a semi-precious stone and not found locally to the Egyptians. Its status and value derived in part from the fact that it had to be imported, most likely from Afghanistan.
To find out more about Ancient Egyptian amulets please see our relevant blog post: Egyptian Amulets and their Meanings: Ancient Egyptian Gods.