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Tourmaline: black
Black is one of the many colours of tourmaline. Occasionally, because this stone is pleochroic, it might be green when viewed along a different axis. As a healing stone, black tourmaline is said to protect against cell phones and radiation. It grounds energy, clears negative thoughts and increases physical vitality. It is said to strengthen the immune system, treat arthritis and provide pain relief.
Hardness: 7-7.5
Origin: Brazil
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