6 Large Granite Whisky Rocks with Storage Pouch. What better way to get a head start on warm whiskey than by using cold granite rocks? Keep them in the freezer and just one large stone will cool your small dram without diluting it. The granite is completely inert and non-porous, so it won't affect the taste of your drink. Unlike soapstone, the granite never erodes and leaves no residue in the drink. Strong gift box with pouch included