We refinished our kitchen this past October. In March we bought metal swivel bar stools for the "eat at counter." A few months later I noticed a piece of silestone chip on the floor after my daughter knocked into the counter while swiveling in her chair. Luckily the chips (it turns out there are three) are on the underside of the silestone counter where noone but I can see them. I would like to get them fixed, but the company that installed them would charge $125 to come fix them. What are my options to fix an under the counter chip in my Silestone counter? Is there an epoxy that I can purchase from a home improvement store?