Granite
This is one of the hardest materials on earth. Primarily made of Quartz (35%), Feldspar (45%) and Potassium. Usually has darker colors. Contains very little calcite, if any. Provides a heavy crystalline and granular appearance with mineral grains. It is very hard material and easier to maintain than marble. Yet, it is still porous and will stain. There are different types of granite depending on the percentage mix of quartz, mica and feldspar. Black granite is known as an Anorthosite. It contains very little quartz and feldspar and has a different composition than true granite.
Used as a countertop material, it is resistant to scratches, acids, stains and heat. It is long lasting, durable and available in a wide variety of colors, textures and unique crystal patterns that create a warm and inviting environment for your kitchen or bath.

Marble
A recrystallized limestone that formed when the limestone softened from heat and pressure and recrystallized into marble where mineral changes occurred. Hardness rates from 2.5 to 5 on the MOH Scale. Marble has many color variances due to the impurities present at formation. Some of the different colors of marble are Green (serpentine), White, Black Gold, Pink, Rainforest Green & Rainforest Brown, Oyster Beige, Onyx & Blue Fantasy etc.

Marble is classified into three categories:

> Dolomite: If it has more than 40% magnesium carbonate.
> Magnesium: If it has between 5% and 40% magnesium carbonate.
> Calcite: If it has less than 5% magnesium carbonate.