Product size : 6"-24" Packaging Details : suitable foam for each bowl ,and suitable carton 24K pure gold crystal singing bowls Crystal singing bowl for sound healing, music therapy and chakra balancing. it can be any shape(bowl, grail, cup, hanging bell, goblet, crucible with handle or other design). The color is various(including frosted,nature color and plating pure gold, platinum and flowers, leaf and other pictures). We can print your logo for singing bowl and package Our Crystal Singing Bowls are manufactured from 99.99% pure quartz crystal, and are the finest, pristine, crystal singing bowls. The crushed quartz is heated to at least 4000 degrees in the manufacturing. Then, they are tested to determine the musical note. Although the larger bowls have a deeper, lower octave, tone, it is not the size that determines the ��note�� of the bowl. The bowls are associated with the musical scale, starting with C, then D, E, F, G, A and B. These notes are in turn associated with the Seven Chakras of the Human System. Sound Therapists, Massage Practitioners, Medical Doctors, Chiropractors, Reiki Practitioners, Musicians, Singers, Voice Coaches, Meditation Teachers and Energy workers choose our bowls when they want the best sound quality, resonance and customer service for their practices, clients and own reputations.