Drink Rocks keep your spirits as they should be: undiluted. The platonically shaped stones are designed to be chilled in your freezer before being admired in your evening cocktail. Our Drink Rocks are made with natural materials and are finished by hand. The finishing process affords each piece with unique characteristics which may vary from product to product. Cleaning Tips: To preserve the natural stone texture, do not use abrasive cleaners. Soak the Drink Rocks in warm water for a few hours. Be sure the stones are covered by at least a couple of inches, so that there's plenty of volume to absorb unwanted flavors. When you place them back in the freezer, be sure they are dry (any surface moisture will more readily absorb flavors) and keep them in a sealed bag or container. Material: Soapstone and Marble Dimensions: 2 x 2 x 1.8 in