Granite the most common rock, has a crystalline, granular structure, with a range of colors and consisting mostly of quartz, feldspars and minerals. Because granite was formed millions of years ago, it is synonymous of strength, permanence, solidity, quality and hardness. These characteristics make it an ideal choice for countertops surface. Most granite used for countertops is polished to a high gloss finish, many granites have certain natural characteristics such as " pitting", "fissures" or "dull spots" that may at first cause some concern. It is important to understand the geological reasons for these characteristics to fully appreciate the beauty of the natural rock.
"Pitting" is normally due to the fact that granite is a natural product that has crystalline structure, sometimes resulting in small spaces between the varying mineral crystals. In some cases, certain tiny crystals may also be removed during the polishing process causing the pits to become more visible. They cannot be avoided in all granite types. Pitting will not become worse with regular use or with the passage of time.
Many types of granite have small fissures, hairline cracks on the surface, usually more visible in the larger quartz crystals. These surface fissures should not be confused with structural cracks that pearmeate the entire slab. 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.
The final appearance of the polished surface of each type of granite is determined by the specific composition of quartz, feldspars 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 "dull spots" or "water marks". Often these spots are visible on the crystals present in some granite.
Pits, fissures and dull spots, some granites exhibit these characteristics more than others, and they may also be more or less visible depending on the lighting conditions present in a room. Pits, fissures and dull spots do not compromise the integrity of the granite in any way; they are natural characteristics and will not impair the function or durability of the material. They are an expression of nature.