LifeJoy Set of 9 Grey Whisky Chilling Rocks in Gift Box with Muslin Carrying Pouch - Made of Pure Soapstone Includes 9 Grey Sipping Stones Made from Natural Soapstone Chill Your Drink with No Dilution,Finally Whiskey on the rocks-no melting! Freeze for 30 minuts before using Perfect As A Gift or for Your Next Cocktail Party Each stone is about 3/4