These Whiskey stones cool all your drinks without diluting them. And honestly: it also looks cool. The set of 8 stones comes in a wooden box.

How to use:
The colder the whiskey, the more flavors and scents you dampen. What a waste! You want to drink your whiskey cool, but not too cool. The usage is simple:

Before use, place the stones in the freezer for a few hours. When the stones are well chilled, fill a glass with your favorite (alcoholic) drink, add 1 or 2 stones, and enjoy!