Natural stone groups
Common stone types
An igneous stone that is extremely hard, dense and resistant to scratches and acid etching. It is an ideal stone for use in flooring and in food preparation areas. Hundreds of varieties of granite exist.
A derivative of limestone, marble is a metamorphic stone that can be polished. Marble is characteristically soft and easily scratched or etched by acids. There are countless types of marble from around the world.
A sedimentary stone formed from calcite and sediment that comes in a variety of earthen colours.
Like many other sedimentary rocks, most limestone is composed of grains. The Limestone is a rock mainly consisting of calcium carbonate, and presents particular characteristics: mostly clear colours ranging from ivory colour, to straw yellow, to grey, until the browner shades and darker tonality of Nanto stone.
Our limestone is extracted from the Berici Hills in Italy. Berici limestone was used extensively during the era of the Roman Empire, when it was employed for both decorative and architectural applications, including elaborate sculptures and facades.
Limestone is readily available and relatively easy to cut into blocks or more elaborate carvings. The material makes for an excellent flooring material.
This sedimentary stone is primarily composed of loose grains of quartz sand that are rough in texture. A number of varieties are available.
Sandstone may be any colour due to impurities within the minerals, but the most common colours are tan, brown, yellow, red, grey, pink, white, and black. Since sandstone beds often formed form highly visible cliffs and other elements relating to the arrangement of the physical features of the surrounding landscapes, some certain colours of sandstone have been strongly identified with certain regions.
Sandstone has been a popular building material since ancient times, and it continues to be used today. It is relatively soft, making it easy to carve to create ornamental fountains and statues. Some sandstones are resistant to weathering, and prove easy to work with. These qualities make sandstone a common building and paving material both domestically and commercially.
GOLDEN SHELL sandstone
A crystallised, partially metamorphosed limestone, which because of its structure, can be filled and honed and is dense enough to be a type of marble.
Travertine is a sedimentary limestone rock, widely used in construction, especially in Europe. The colour depends on the oxide content, built-in quite easily and naturally by the porous nature of the stone. The natural colour varies from white milk to walnut, through various shades from yellow to red. It can frequently be found containing shell, fossil footprints of animals and plants.
Travertine is frequently used as a building material. It can appear with holes, giving a rustic look, or it can be honed, filled and polished. Holes can naturally appear at any time.
This metamorphic stone has a sheet-like structure composed of clay, quartz, and shale and comes in a multitude of colours including reds and greens.
Slate is a metamorphic rock of sedimentary origin. It is a variety of limestone, and the shale can split easily into thin sheets – flat, lightweight, waterproof, and weather-resistant – resulting from low-grade metamorphism of sedimentary rocks, formed by deposition of a fine silt (marl) due to the erosion of ancient reliefs.
Slate is classified as a soft or semi-hard rock. It is a compact stone, leaden-blackish colour and easy to work. The slate tends to clear from extraction, up to a light grey pigmentation – the darker shades are due to carbon residues which oxidise when in contact with oxygen, moisture and ultraviolet radiation.
By virtue of its ability in which the rocks tend to split along parallel planes, this material can be employed in various craft and industrial sections, both for architectural design and building construction, for example: the construction of roofs, floors, steps and staircases.
This synthetic stone is made from natural stone chips suspended in a binder such as cement, epoxy resins, or polyester. The most well known agglomerated stone is poured-in-place terrazzo, used in buildings for thousands of years.
Often known as Quartz Corian Terrazzo, it is a man-made material composed of mechanically fragmented or crushed stone material, mixed with a cementitious binder or resin to make it compact enough to be sawn into slabs, worktops or floor tiles, along with other architectural applications.
The characteristics of this type of material are the consistency of colour, the absence of breakages (normally present in natural materials), and the possibility of having uniform dimensions of blocks and slabs.
Agglomerated stones are widely used in both residentially and commercially – often made to look like natural stone – and in lots of cases the real stone is less expensive.
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