Thank you for your interest.  We have temporarily discontinued all Quartz Crystal Clear Bowls.  We at Holographic Sound feel the Alchemical Fusion Frosted Bowls to be a much higher and more powerful frequency than the Clear Alchemy Crystal Bowls.  If you are interested in the higher frequency Alchemical Fusion Crystal Bowls, please let us know or check them out on the website: https://www.holographicsound.com/alchemical-fusion