Yes, and the basic principle is that they don't dilute your whiskey as ice does. Personally, much of the whiskey I collect and drink is in the 107 to 120 proof range, which I find much more flavorful if you can take the heat. In most cases, you can find ice molds for large cubes (approx. 3X3 inches) at wine shops/bed & bath shops etc. If you go to this trouble, please also use filtered or spring water so it doesn't affect the nose or flavor of the spirit in any way. This gives you as much ice volume with as little surface area as possible, cooling your drink, but melting much more slowly than multiple cubes. Also, as a fine cigar evolves in flavor profile as you smoke it, many fine whiskeys change flavor profiles as they dilute. In other words, gradual dilution in SOME whiskeys (good ones) can actually evolve and develop new flavors and thus complexity as the proof diminishes. Of course in many lower proof offerings, dilution simply leaves it flaccid and weak. These are the ones where I think the stones makes sense. Hope this helps.