Pack of 9 Ceramic Cubes Ice Whiskey Wine Beverage Drinks Chilling Stone The Whiskey Stones are made from 100% pure Ceramic These stones are handmade in Vermont USA from new, unused, repurposed and eco-friendly Ceramic. Ceramic is non-porous, odorless, and tasteless. It will not absorb odors from your freezer like ice cubes do. Ceramic has superior thermal mass giving it the natural ability to retain its temperature for extended periods of time. Whiskey stones are dishwasher safe and will never wear out