how much does a granite headstone weigh
3cm or 1-1/4 thick granite weighs about 18+- pounds per square ft. 2cm or 3/4 thick granite weighs about 12+- pounds per square ft. example- If you have a granite top that is 3cm or 1-1/4 thick, 2ft X 10ft. that would be 20 square ft. 20 sq ft X 18 pounds per square ft. = 360 pounds.