So how much does the granite weigh? It is important to note that despite there being a general standard measure of how much it weighs it does though differs from the type and density of the granite itself. For most of the granite types its weight is calculated to be approximately around 2,750 kg / m3 or 2.75 grams per cubic centimeter. Granite’s weight is also often measured based on the thickness of the slab, as they are commonly cut out as slabs rather than used as blocks.
- 3/4″(20mm) thick slab: 12.8 lbs. sq. ft.
- 1 1/4″(30mm) thick slab: 18 lbs sq. ft.
Granites are found in millions of different combinations of compositions of minerals and sediments, the most common elements found are Feldspar, Quartz, Mica, and various other minerals.
One trait that makes a substantial difference in weight is the density of quartz in it. The higher quantity of its presence will make the granite weigh less as quartz has a loosely arranged molecular structure hence having more space in between its atoms. As a rule of thumb granite’s weight does also tell about how strong it is, since the presence of high quartz lowers the overall integrity of the rocky sediments.
The granites which are darker in color are often more heavier than the ones which are light in color. Its weight also needs to be taken into consideration while installation especially for counter tops as if there is not enough reinforcement and supporting columns beneath it, it would be more prune to collapse due to its weight.
So there you have it, how much does granite weigh and what are the variables which affect its weight.