Diaglo polishing pad and a felt wheel will do the trick for you on this! Here is the Diaglo (you need to pick the one suited for you):
http://www.defusco.com/glues-epoxy-polyester-etc-stone-polish-c-82_508.htmland here is the felt pad & backer you use:
http://www.defusco.com/alpha-felt-wheel-velcro-back-p-2360.htmlhttp://www.defusco.com/rigid-backing-pad-velcro-p-1940.htmlScrew the backer pad onto a variable speed grinder at a lower RPM, slap the felt wheel onto it. Sprinkle the Diaglo onto the granite in the area where you want to increase the shine and mist over with a little water. When you start buffing this mixture with a buffing pad it will form a paste. As it dries out mist on a little more water. Repeat as necessary until your gloss is uniform.
The diamond powder in Diaglo will bring out a brilliant shine to match the rest of your countertop.
Questions? Call 800-289-6834.
Mark