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Natural Stone Division > Granite

 

Granite, which is classified as an igneous rock, is formed by volcanic action that liquefies rock deep in the Earth and then solidifies upon cooling. Granite has a crystalline, granular structure consisting mostly of quartz and feldspars, accompanied by one or more dark minerals such as mica. The range of colors of igneous rock will depend mainly on the colors of the prevailing feldspars. This formation contributes to granite's strength, durability, and individuality- the features that make granite the ideal choice for a kitchen countertop. Granite ranges from consistent grain structures and colors, to multicolored stones with veins or movement resulting from the varying distribution of minerals.

Almost all granite that is used for countertops is polished to a high-gloss finish. Certain individual characteristics, such as pitting fissures or dull spots are unique and inherent in the geological blueprint of each slab.

The final appearance of the polished surface of each type of granite is determined by the specific composition or mix of feldspars, quartz, and other minerals. While the overall appearance will be that of a high-gloss finish, some components within the granite may not accept the same level of polish as the rest of the crystals, which can result in so-called dull spots or watermarks. These spots may be visible on the darker crystals found in some granite.

A characteristic referred to as pitting (which is not often visible) may result from grantie's crystalline structure, which can sometimes result in small spaces that form between the varying mineral crystals. In some instances, certain small crystals may also be removed during the polishing process, causing the pits to become more visible. Various steps will be taken during the finishing process to reduce the visibility of these pits, but they cannot be totally avoided in all granite types. Pitting contributes to the stone's unique personality, similar to a beauty mark or freckle on a person. This is part of the natural beauty of the stone. Pitting will not become worse with regular use or with the passage of time.

Fissures are a natural result of the heating and cooling of the stone during its formation millions of years ago. Fissures will not grow or expand over time.
While the type and specific composition determines the amount of pits, fissures and dull spots, some granites exhibit these characteristics more than others, and they may also be more or less visible depending on lighting conditions. Lighting plays an important part in the overall appearance of a finished granite countertop surface.

*IMPORTANT*
Pits, fissures and dull spots do not compromise the integrity of the stone in any way; they are natural characteristics of stone and will not impair the function or durability of the material. They are an expression of nature and add to the timeless allure of stone, setting it apart from man-made surfaces.