Chalcedony/Amethyst Druzy Skull
Chalcedony has the power to align the body, mind and spirit. Amethyst is a master healer, bringing the spiritual into the practical. It enhances your third eye, and opens you to more psychic skills.
When you hold this skull, you can feel the power radiating off of it. If it were mine, I would test it on different parts of my body to see where it has the greatest impact of alignment and opening.