Made from recycled soapstone in Colorado, these innovative ice cube substitutes will chill your favourite spirit without diluting it. Simply freeze, drop, and drink. Boxes set of 13 rocks, 9 small and 4 large. For the early birds, these multifunctional rocks can double as coffee and tea stones. Pop one or two rocks into the microwave, drop them in your mug and enjoy your heated drink for twice as long.