Step 1: Pick Out the Rock
Step 2: Sculpting the Boulder
Big hammer drill
3-9/16" core bit
1" drill bit
One inch chisel
As you can tell, this was all hilti. Drill, chisel, repeat. That is the hole.
I wanted a handle hole. So I laid it on its side and made one and a half holes. Yes, I broke the handle off trying to be cute. Nothing a little gorilla glue can't fix
Step 3: Gluing the Handle Together
If you have never used gorilla glue before, then, I will testify for it. I have fixed a lot of stuff with it. And now I can add granite to the list. Just remember it swells. Use clamps in every direction or it will make a huge mess.
Step 4: Cleaning and Oiling
After all the cleaning I massaged in a granite sealer. Last rubbed with vegetable oil. And rinsed clean.