The obsidian bracelet is more like a weapon for modern men. During the stone age, Obsidian was used to make sharp blades and arrowheads. The Mayans used Obsidian in manufacturing warfare too. In more recent times, Obsidian is used in Turkey and some Middle east cultures for ritual circumcisions.
If you wear an Obsidian bracelet, you can be assured that you are carrying with you powers of ancient weapons that will help you get through in all your daily wars.