Some granite professionals even use some of the granite dust from where the break occurs to color the epoxy glue.
Repair broken granite slab.
Collect matching granite dust.
To create granite dust use a grinder with a diamond grinding bit to go over the surface of a matching piece of granite.
Scrub with a nylon scrub pad to remove stubborn deposits.
This is done by using some of the granite to color the glue.
Let the granite completely dry.
Use an epoxy kit to fill the crack between slabs of granite on your counter.
Mix the epoxy according to the package instructions and select a color that will closely match your granite so it is less visible once dry.
In order to make the repair blend in with the rest of the slab you will need to color the glue to match it.
Most stone repair experts recommend methyl ethyl ketone for this step.
If you do it yourself then make sure you clean the area before applying the glue.
Apply it to the granite counter focusing on the broken edge.
Dish soap with 1 gallon water to make a light cleaning solution.
Wipe over the granite with the acetone to remove all oil dirt and other contaminants.
Carefully fill in the seam again moving back to front and wipe off any excess as you go.
Clean the area to be repaired thoroughly with peroxide based cleaner and then let the granite air dry for 20 to 30 minutes.
Often you can repair a separated crack in the granite countertop by filling in the gaps with an epoxy glue that matches the color of the stone.
Wipe down the granite with a fresh dry towel to.
Brush away any excess particles of granite with your hands.