This is the combination of Obsidian and Pure Quartz Crystal.
Obsidian is a basing rock that offers an instantaneous connection to the Root Chakra deep into the center of the Planet. The Third Eye or Brow Chakras are also activated while utilizing it. It can break through psychological barriers and eliminates mental conditioning. It is a rock of truth, resilience, and prevents psychic attacks. It is known to fend off negativity.