There is no specific hand to wear a black obsidian bracelet. However, according to traditional Chinese beliefs, the left hand is considered the “receiving” hand, and the right hand is considered the “giving” hand. The left side of the body is also associated with receiving energy, while the right side is associated with sending energy.
Therefore, some people may prefer to wear their black obsidian bracelet on their left wrist to receive the stone’s protective and grounding energy. However, others may prefer to wear it on their right wrist to send the energy outwards and protect others.
Choosing which hand to wear a black obsidian bracelet is a personal preference and may depend on your individual beliefs or intention for wearing the bracelet.