Im a stone guy, time involved doing something like that in my shop cost you bout $400-500 for the pair, and to be fair id break even at that. The price of the stone is trivial compared to the time involved cutting and polishing.Wood is forgiving, stone is not.
If your granite stand hits the floor, your marble floor and stands will be worse for the wear. Wood stand ehh, stand it back up and move on.
I love stone, but for me I wouldn't be bothered for something like that in my house. If you really like the stone look, make them out of wood and have them formica'd. Seriously, formica has really done a great job simulating stone with photo imaging. Ive torn out kitchen tops at first glance i thought were real, and im in the biz since '92.