When we had our granite countertops installed, we used a great installer, Western Tile and Marble. They were very professional, and did a flawless job. They didn’t make a fuss when we requested keeping the leftover bits (they had to make a second trip out to deliver the scrap pieces).
Additionally, we had ordered a marble-topped vanity from overstock.com that came with a chip in the corner. We asked for a price to have them take the square edge of the marble top (with the chip in it) and router the edge to make it rounded to get rid of the chip. They just decided to throw that in for free for us, and made a separate trip out to fix that edge. They routered the three sides of the marble top flawlessly right at our house.
I’d recommend them if you have any granite fabrication to do in the Seattle area.