True Granites vs. Commercial Granites

Granites in the commercial sense are hard natural stones which are polishable and need to be worked on by harder tools than for marble for cutting, shaping and polishing. They are usually suitable for interior and exterior use. Thus have different geological origins and minerals. Petrographically, they are either magmatic or metamorphic rocks.

True granites, i.e. granites in the scientific sense, are only their one group within the range of commercial granites. They are light magmatic rocks formed by crystalization from magma under the earth's surface.

Commercial granites are mixtures of minerals and are composed of visible multicoloured mineral grains. Grains of one colour are typically encircled by grains of other colours, e.g. grey quartz is close to pink orthoclase, white plagioclase and dark mica.

Marbles in the commercial sense are either without visible grains of calcite (in limestones) or are composed of grouped calcite grains of similar colour (in true marbles). True Granites vs. Commercial Granites

img 1




More resources:
Granites
Any architect or user had ever thought about this colour variation, in granites of different area as well as many colours in a singular plutonic body of granitic intrusion. This all depends on mineral constitution of the particular type of granite.
Granite Fireplaces
Thea solid slabs are ideal for applications such as countertops, vanities, fireplaces and tub surrounds - anywhere that a solid surface is required. Tiles are most often used in front entrances, kitchens, floors, backsplashes and showers.