Granite is a dense rock, and its weight can vary depending on the specific composition and location of the quarry. However, on average, granite weighs:

* 165 pounds per cubic foot (2.64 kg/m³)

This is a good general guideline, but keep in mind:

* Specific gravity: Different granite types have slightly different densities. For example, granite with higher quartz content will be slightly denser than granite with more feldspar.

* Porosity: The presence of pores and cavities in the granite can also affect its weight.

* Location: The weight can vary slightly due to the geological conditions where the granite is quarried.

If you need a precise weight for a specific piece of granite, you can consult with a supplier or geologist.