This is not a bead and has no holes.
Obsidian is grounding and helps transmute negative energy. It draws stress from the body allowing one to release what no longer serves them. It is a stone that teaches about ones spiritual nature, by bringing in positivity through love and light. Obsidian is an excellent scrying tool, and strengthens mental powers allowing the enhancement of clairvoyant abilities.
Palm stones are polished oval stones that can be used for crystal healing, meditation and many other esoteric healing practices. The reason that palm stones are called palm stones is very simple: they fit perfectly into the palm of your hand.