Black Diamond 6.32mm Rivoli rhinestone earrings. To get an idea of the size refer to the ear pic above. Posts…solid hypo-allergenic surgical steel. Backs…solid hypo-allergenic surgical steel butterfly backs Earrings come to you carded & in my cotton filled gold embossed gift boxes. From our different pics you can see how the same earring can appear different colors in different lighting conditions & when simply viewed at different angles.. These ever changing color effects are what make crystals such interesting & captivating jewelry pieces. 6.32mm Black Diamond Rivoli Rhinestone Stud Earrings, Crystal Studs, Small Rhinestone Earrings