Heart scarab

The heart was extremely important to ancient Egyptians as the seat of intelligence and the storehouse of memory.

[2] The amulets are described in the Book of the Dead to be made (per Andrews, Amulets of Ancient Egypt)[3] of a stone: nmhf, nemehef (not now identified); typically green stones, green jasper, serpentine, and basalt.

Andrews continues to say they are in fact made from: green or dark-green materials, such as glazed steatite, schist, feldspar, hematite and obsidian; also blue-glazed composition (faience), Egyptian blue, rock crystal, alabaster or red jasper.

Until the beginning of the 18th Dynasty, the heart scarab had a strong connection to Theban royalty.

During the 21st Dynasty, it stood as an important item of magical protection among the priesthood of Amun.

After the 21st Dynasty, the amulet is rarely depicted in human contexts and is instead associated with specific divinities.