There are different grades of granites and depending on which ones are used for making granite kitchen countertops they may or may not have to be sealed. Usually the darker colored granite slabs are left unsealed as they have smaller or finer crystals that make it harder for any liquids include the sealer to penetrate through it.

Granite is made from small and large crystals that solidify deep inside the earth's core. The main minerals in granite slabs include silicates, feldspar, and quartz. Granite slabs available for kitchen countertops are available in a variety of colors and designs. Usually, the most popular choice of granite kitchen countertops includes granite slabs in shads of white, beige and pink.

There are several advantages of granite that lend it to use in granite countertops. One of the biggest advantages of granite is that it is a highly durable siliceous stone. As a result of its natural composition, it is less resistant than even marble countertops to acids found in cooking products.

Since granite is a very hard material, second only to diamond in its hardness, it is extremely durable and can last even for decades. Its hardness also makes granite difficult to scratch. So a homeowner can run keys and utensils across the surface of the kitchen countertop and find that it has not caused any scratch on the surface of the granite.

The characteristics of granite also make this stone heat resistant. It can withstand heat up to 1200 degrees Fahrenheit. So homeowners do not really have to worry about burn or char marks being placed on the surface of the granite slabs.

The main characteristic of granite is its strength and durability. It's a unique and elegant natural stone and is also one of the oldest, hardest, and strongest stones available.

Homeowners who cannot afford granite slabs for the entire stretch of the kitchen countertop can combine the natural stone with other materials include stainless steel and glass. This gives the kitchen a modern and sleek look.