The bull's eye is a tiger's eye heated by the earth but also sometimes by humans to have this red color. We get the natural tiger's eye therefore heated naturally by the effects of the planet for a moment in its existence, it will have less radiance than the stone heated by man but we consider that the natural heating is part of it. history of stone and therefore of its properties. It is no coincidence that the bull's eye is found in countries identical to the tiger's eye but very often near volcanic rock. In addition to the properties of the tiger's eye, lithotherapy books give the bull's eye the virtues of stimulating and motivating stone, apathy, joy, human warmth, friendliness, humor, seduction. Second chakra, suitable for astrological signs of fire.