Rudraksha is a sacred seed traditionally used in Hinduism and Buddhism, believed to be the tears of Lord Shiva. It comes from the Elaeocarpus ganitrus tree and is often worn as beads in malas (prayer necklaces) or bracelets. Rudraksha beads are valued for their spiritual significance and are believed to bring peace, protection, and positive energy to the wearer, aiding in meditation and spiritual growth.