Add style and cooling power to drinks.It is polished from natural stone, which adds a luxurious touch to your drinks.Melting ice cubes waters down your drinks and change the flavour. These reusable ice cubes don’t melt away and can be used over and over.These cubes do a pretty good job and work with already cold, as well as room temperature drinks.Please put the stones in the refrigerator for 1 to 3 hours before use.4 pcs stones of different shapes are included in the set.