From the Dream Seeds Gem Drops Transformational Series. PROTECTION (Shield). Stones: Amethyst, Black Tourmaline, Black Obsidian and Clear Quartz Crystal Planetary Influence: Neptune and Pluto. Chakras: 6th and 1st. Black Tourmaline deflects negativity instead of absorbing it. Amethyst initiates greater wisdom and also emits strong protective energies. Black Obsidian teaches us to find the light in darkness by releasing anything of lesser vibration.