Granite's hard surface measures on the Mohs scale around 6 to 7. Its ability to withstand daily use and abuse makes it a good choice for table tops. Designing a table top requires a handful of decisions in order to be made to properly fit a table base. Larger table tops may need to be manufactured in sections and require a seam due to the size limitations of granite slab. Granite suppliers may manufacturer table tops or use a sub-contractor to cut and finish the granite for them.