Bone is a traditional material that the Nepalese and Tibetans use for making malas. The bone signifies strength and is said to amplify one 's life force. The skull beads reinforce the Tibetan Buddhist concept of impermanence and for the Hindu, the skulls are like the skull necklace of the Goddess Kali. In the Hindu tradition Kali's skull mala symbolizes knowledge, wisdom and liberation. Do mantra with this Bone Skull Mala to tap into these concepts in your own meditation practice. Other sizes may be available.