The onyx gemstone is a protective semi precious gemstone that can help to create invisibility in order to release negative emotions to create balance. These beautiful black dangling Onyx Gemstone earrings feature .925 sterling silver posts and because of their awesome beauty and reported healing properties, these will most likely become your favorite pair of earrings. Please note that these are natural gemstones so no two are exactly alike and there may be variations in color and or markings in each stone.