Come visit our warehouse in Denver, CO to view our huge selection of quartz slab countertops. Quartz is a durable and strong option for kitchen countertops. Read more information about the color and finishes of quartz below. Get more information on our quartz slab countertops here.
Color and Finishes of Quartz
During the formation of quartz certain substances contribute to the mineral’s, the color, veinings, clouds, mottlings, and shadings. The purest Quartz-based stones are nearly white. Stones with a variety of colors are from the iron oxides. The presence of yellow, browns, and buff shades are from limonite. Hematite produces darker shades of brown and red. However, when iron- bearing minerals are exposed to the oxidation process, it may cause some stones to change color after installation. Quartz- based stones are formed in layers throughout time, therefore, each layer may vary in color, sometimes up to 12 different color variations.
Texture of Quartz
Texture is defined as the size, degree of uniformity, and arrangement of constituent minerals. Quartz-based stones are categorized as quartz; however, some are nearly pure quartz. A well- rounded or angular texture of quartz grains are dependant upon the degree to which they were water- worn before consolidation. Grain composition can affect the texture of quartz since some deposits show remarkable uniformity in size of grains. The texture of Quartz-based stone is also affected by the way that the grains of silica break apart. Quartz-based stones are the most variable type of dimension stone due to a wide variety in degree of cementation and type of cementing material between the grains.
The four most common cementing materials are: iron oxides, clay, calcite, and quartz.
All stages of cementation are found in nature, from incoherent sandstones that may be crumbled between our fingers, to the most hardened quartzites. All types between these extremes are used commercially. Sandstones are relatively high porosity stones, whereas, quartzites can have as little pore space as granites.
Finishes of Quartz
One of the more common finishes for Quartz-based stone is natural cleft finish. However, the face of natural- cleft stone is not always a true flat surface. This could result in surfaces that concave or convex, it can also cause it to warp or cause corners to tip either down or up. Other finishes include bush- hammered and thermal finishes, which cause the reduction of the stone’s thickness. This can be problematic since these finishes can make the stone more vulnerable to weakening from exposure to freezing and thawing cycles.