Black Onyx is a protection stone that connects you to the realm of the night. Benefits of Black Onyx:- Ensure smart decision-making. Encourage happiness and luck. Improve self-discipline. Enhance meditation. Relieve phobias, self-doubt, and anxiety. Size:- 8 mm 24 Beads | 10 mm 19 Beads. Natural Stone | Round Beads | Handmade Elastic Bracelet. Please note: You will receive one crystal similar to the ones photographed. Photos show typical quality. Each and every crystal is unique. Crystal care tips:- Remember to keep cleansing and charging your crystals every two to four weeks. If your crystals get damaged/broken, it is recommended to bury them in the earth or immerse it in a river or lake.