Online Black Onyx Necklaces | Auras by Osiris At Auras by Osiris, our black onyx necklace collection is stunning and encompasses a wide range of styles and price ranges. We strive to provide our customers with top-quality onyx necklaces at the best prices possible. The onyx necklace is a truly versatile piece of jewelry. To get more information, visit the website: https://sites.google.com/view/auras-by-osiris/home