My vote is for Granite. You just can't match the look of it with the manufactured stuff although they're getting better(at more $$).
On a more important note, I also got a couple of Guiness glasses for Christmas!! trouble is, since I got them, I've tried Cobblestone Stout from Mill St Brewery which puts Guiness to shame. Some Mill St glasses would make a nice Christmas present next year...just sayin'.
Mark? anyone?
Half of communication is listening. You can't listen with your mouth.