GRAV Spoon | Pebble | Green Have you ever found a perfectly smooth rock that fits just right in the palm of your hand? The low profile bowl, carb, and mouthpiece of the GRAV® Pebble Spoon make it discreet and easy to slip into a bag or a pocket. Satisfying to hold and hit, the GRAV® Pebble Spoon slides serenely into the flow of your life.