How heavy is granite? (Shelby Township, MI)

Granite counters are typically 3/4″ (2CM) or 1 3/16″(3CM) thick. 2CM granite weighs about 12 lbs. per square foot. 3CM weighs about 18 lbs. per square foot. Black granite (not true granite) is denser than light colored stones and weighs more. This extra density is why most dark stones are less porous and resist staining. According to GraniteInsider