FYI, granite tile is tough to install well. You're supposed to butt the tiles right together, and the bevel on each edge is only 1/32 of an inch - so the grout line is all of a 16th! Sooo...when you don't lay the tiles in *exactly* the same plane, you get noticeable edges. Very frustrating for me! Thank god the original fast setting mortar I tried set up REALLY fast and made me abort, or I'd have had real troubles even getting the tiling to be "acceptable".
I'm very disappointed in the job I did. More so than the client, thankfully, I guess.
JP