Healing Stone Beads Black Onyx and Black Spinel Accent Earrings for Women Features Black Onyx stones are 6 mm each and have a total carat weight of 3.26 carats Black Spinel has a total weight of 0.08 carats, Earrings are 14 mm long and secure with standard sterling silver posts and butterfly backs. A powerful protection stone, Black Onyx absorbs and transforms negative energy, and helps to prevent the drain of personal energy. The Product picture taken closely please check the actual size, as each stone is unique and natural gemstones in color and texture vary from each other. Fulfilled by Amazon. Fast and satisfaction guaranteed. 30 Days Money Back guaranteed.