Characteristics of the Stone: You may have heard the name obsidian in history class. In prehistoric times, humans, our ancestors, obtained this obsidian and used it for jewelry, or used the sharp shards of broken obsidian for knives and arrowheads. Since it was abundant in areas with volcanic activity, it can be said that it is a stone that has been closely associated with humanity since ancient times. Obsidian was used for warding off evil and divination. It is said to purify negative feelings and awaken hope for life. For those who are overwhelmed by challenges and troubles beyond their capacity, and are tired of living, it provides the vitality to grow as a person. While being tossed about by rough waves is painful, by contemplating and practicing how to behave in work and interpersonal relationships, that experience should steadily bring you to life and help you grow. For those who tend to procrastinate or put things off even when they try to do something. Obsidian also stabilizes such a person's mental state, increases concentration, and gives them the power to persevere when it matters most. Wear it if you are indecisive and tend to give in to temptation. It is a stone that supports those who want to exert their full potential and take on challenges with all their might. It is favored and used by people who: ・Feel negative and want to be more proactive ・Want to overcome difficulties and grow themselves ・Want to eliminate distractions and have the concentration to continue things Bracelet Inner Diameter: Approximately 16±1cm Bead Diameter: 13mm Authenticity Guaranteed, 5A Quality The quality is completely different from the inexpensive products circulating in the market. It is spotless, clean, and a very special product. It looks black at first glance, but when you shine a light on it, you can see a rainbow cat's eye effect. Please check the second photo. Please check the attached photos and bid with your understanding. 3N (No returns, no refunds, no exchanges) requested. Thank you very much.