Make from Yak Bone and Rosewood. Bone signifies impermanence, a main Buddhist doctrine. By contemplating impermanence we are able to fully live and experience joy. Rosewood is a special and rare wood considered holy and prized in India and many cultures. It is a protective wood that is believed to shield one from negative energy. Rosewood is also known for healing, improving circulation and aids in manifesting what you desire, dream and need to heal.