Inspired by a customer request, the Viper has a unique curvature and ridged shape for extra sensation. Resembling a rattle or stinger, the Viper aids in honoring your darker impulses.Black Obsidian: is the stone of protection and the shadow promotes self control and keeping excessive emotions and passions under control eases past relationship trauma and overcoming emotional strain promotes clarity when making difficult decisions absorbs negative energies and attachments releases sexual shame and healing related traumas Weight: 0.5 lbMeasured Flat: 7.5" long and 1.33" wideCircumference: 3.75"