Iron Nail Witch Nail Necklace Austrian Mysteries the shells within the Abyss the shells within the Abyss that are both within the Microcosm (the subconscious) and Macrocosm (outside potentially in the Cosmos or Anti cosmos) are in Qabalah A detailed list of flowers they have also been driven into door frames to protect ones dwelling from unwanted malevolent energies or driven into the 4 corners of one's property to protect their home Iron nails can also be worn as a protective charm of sorts due to the fact that Iron in alchemy is known as a protective element that also has a grounding effect and helps to build one's courage and mental strength