Cutting granite tiles
With a 4" grinder you can cut a curve with a diamond wheel. Just do not cut all the way at first, turning around the curve and then again deeper. Now use a diamond grinder wheel to fine tune the shape. Next you need to use wet diamond disks from 50-8500 grit to polish the edges. Equipment if you do not have it (you don't) will cost about $1000. SOOO,,,, bring to a granite shop and have them do it for you, may not cost much at all. Make a template of the cuts you need with the edge profile and location specified.