Tamashii products are handcrafted from natural stones/pearls, they may bear shades slightly different from the published photos. Unisex Original Tibetan Tamashii bracelet with collar stone. The “Stone Collar” stone is a true rarity. Due to its special composition, it is difficult to find. In ancient times, these stones were highly contested given their original beauty. They are dressed in a shade of green that symbolizes harmony but also youthful vigor and action.