To use this set, first place the granite whiskey stones in the freezer for a few hours. When you're ready to enjoy your whiskey, simply drop the chilled stones into your signature crystal glass and pour in your favorite whiskey. These stones will keep your drink cool without watering it down. As for maintenance, after use, wash the glasses with mild dish soap and warm water, then dry them thoroughly. The granite stones can be rinsed under running water and left to air - dry. Just remember not to use abrasive cleaners on the crystal glasses, as they can scratch the surface. And don't expose the granite stones to extreme temperature changes suddenly, as this could cause them to crack.
