Why are pits found in Granite?

Pits are formed in the surface during the polishing process when some of the weaker components of granite flake off. This happens at the processing plants. The pits themselves do not make the granite less durable or inferior for use in countertops, but the look and feel may bother some clients. We do not recommend filling the pits because no compound can adequately or permanently fill these spaces.  If pits are of a concern to the client, they should consider choosing a stone with no visual imperfections or consider an engineered stone product.