JIC Gem 2 Pcs 1 1/2" Black Obsidian Pyramid 2 Pcs Black Obsidian Pyramid. Black Obsidian Stone is a powerful cleanser of psychic smog created within your aura, and is a strong psychic protection stone. PYRAMID POWER is intrinsic to the pyramid shape which has been proven to function as a geometric accumulator and amplifier of strong energy forces. Placing crystals in geometric energy forms within the pyramid, dramatically magnifies the overall energies as they blend together in a unified gridwork lattice. The pyramid-crystal synergy waves focus through numerous centres with a concentration in the crystal capstone. This transmuting pyramidal energy manifests a powerful vortex of spiraling healing energies, that will then interrelate with the chakras of the human body.