Giani Granite 4" Textured Sponge 4" Giani Sponge designed specifically for Giani Countertop Paint finishes. The random texture necessary to create the granite look is achieved via tearing away small bits of the sponge. Standard off-the-shelf sponges will not be effective. The 4" Giani Sponge is included in all Giani Countertop Paint Kits.