Crystal Singing Bowls are made from 99.99% pure crystal, Quartz crystal singing bowl produced by high pure quartz crystal, it is an excellent for meditation and Healing. -Beautiful, Clear, Deep, Amazing and Rich Vibrational Resonance with the power to Health. Singing bowl gift: One Rubber Mallet and One O-ring The playing of the chakra-tuned Singing Quartz Crystal bowls angelic tones and their rippling vibrations can have a profound personal and healing effect. 100% refund or resend if broken during shipping Our technicians will conduct professional inspection before before leave our factory, we can guarantee that you will be satisfied with our crystal singing