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5 Things We Bet You Don't Know About Granite

by Daniel Morrell

Posted on March 01, 2017 09:38:44 PM

If you’ve already purchased granite countertops from, it was surely because of the outstanding natural beauty and durability of the stone. It truly is an unrivaled countertop option that offers a multitude of benefits for homeowners. Beyond granite’s aesthetic advantage, it also increases the value of any home, as mentioned before in previous articles. We’re sure that you conducted plenty of research before buying your granite counters, and probably consider yourself to be quite the granite expert by now. Well, you may be surprised to know how much there to learn about granite! This article will cover the five things that most people don’t know about one of our favorite natural stones.

Granite is Formed from Magma

Unless you studied geology, you are probably unaware that granite is formed from magma. Magma is a mixture of molten and semi-molten rock that is found beneath the surface of the Earth. Granite is formed within the Earth’s crust when “Felsic magma” (magma that is rich in Silica) cools down without reaching the surface. Because it remains beneath the crust as it cools, granite forms large crystals that give it its unique aesthetic.

All Granite Must be Formed Underground

All granite exposed on the planet’s surface was lifted from miles below it after being formed. If the same magma that gives rise to granite cools at the Earth’s surface, as part of a volcanic eruption, it forms a stone known as “rhyolite,” which differs vastly from granite, and can have a very different, glassy texture.

One of the World’s Tallest Mountains is Composed of Granite

Generally considered the third tallest mountain behind Mt. Everest and K2, “Kanchenjunga,” is found between Nepal and India. The top of the mountain is actually solid granite rock, as opposed to Mt. Everest, which is composed of limestone. Actually, in a similar vein, because granite is one of the most durable materials on Earth, most sport rock-climbing walls are made from it.

Granite Surfaces that are Exposed to Moisture Should be Sealed Regularly

While it is extremely durable, granite is still a tad permeable to moisture unless it is properly sealed. As a rule, this should be done twice per year. A sealed granite countertop will cause moisture to sit on the surface as observable “beads,” rather than penetrating the stone, which can damage it. When moisture spreads rapidly or begins absorbing in the granite, the formerly applied sealant is most likely expired, and must be immediately resealed to prevent lasting damage to the stone.

Some of the Wonders of the World are Made of Granite

Many of the amazing structures built in human history were actually built from granite. From the iconic Mount Rushmore in South Dakota to the Great Pyramid of Giza – which is considered a wonder of the world, to Brihadeeswarar Temple in India, are all constructed of this strong natural stone. Granite has proven to be so durable that the structures built from it remain standing thousands of years after they were built. Some ancient statues have also used it as a building block. The Colossal Red Granite head of Amenhotep was built from granite as well.