This “Star” (or Merkaba) necklace in black obsidian will harmonize the energy of your Root Chakra. Obsidian is a natural volcanic glass that has powerful healing properties. It cleans up the psychic fog created in your aura and is a strong psychic protection stone. In the Middle Ages, it was thought to repel demons. That's why it could be used to build foundations. It has powerful metaphysical properties that protect you against negativity and stress. It is a “VITALITY” stone that helps you stay aligned and connected to the purpose of your soul. The Merkaba is an energetic vehicle that allows you to travel from one dimension to another, with full consciousness.