Tamashii products are handcrafted from natural stones/pearls, they may bear shades slightly different from the published photos. Unisex Original Tibetan Tamashii bracelet with tourmaline. Tourmaline in the black variant is, of all, the one that most exhibits the property of double refraction (one dark and one light), the intensity of which varies depending on the angle of observation. In Eastern culture this stone represents the balance between two opposing forces. It is offered or worn to balance the emotional state when subjected to severe stress conditions.