Natural sardonyx is a chalcedony, onyx, Sardony, primary and secondary rhombohedral. Sensory perception, stone of strength and protection, calming. Promotes integrity, increases willpower and strengthens character, addiction. It is a chalcedony agate therefore a quartz. Very complete stone, its flaw is not very pretty. Comes from Brazil or Asia, a stone in formation so in addition to stimulating and purifying the sardonyx anchors energy and absorbs negativity. For the high chakras and heart. Associated astrological signs are Scorpio and Capricorn.