All About stone
Granite is an igneous rock that is composed of quartz, feldspar, mica, and usually hornblende. Granite forms as magma cools very slowly deep under the earth’s crust. This allows crystals of the four minerals to grow large enough to be clearly visible.
The word granite comes from the Latin granum, meaning a grain, in reference to the grained structure of such a crystalline rock.
Granite has been intruded into the crust of the Earth during all geologic periods, except perhaps the most recent; much of it is of Precambrian age. Granite is found and quarried throughout the world. Most commercially available granite comes from Italy, South America, China, India, Scandinavia and South Africa.
Granite makes a good material for floors and kitchen worktops being both decorative and extremely hard wearing. Every piece is unique!
Average density: 2750 kg/m3 (range 1741 to 2800) or about 83kg per square metre for a 30mm worktop.
Marble is a metamorphic rock, composed of very pure calcium carbonate. The softness of marble makes it very desirable for sculpture and building stone. Although marble is effectively metamorphosed limestone, the temperatures and pressures necessary to form marble usually destroy any fossils that may have been present in the limestone. It is relatively soft (compared to granite) and is easily damaged by acid, making it less suitable for kitchen worktops. Its soft and sometimes dramatic colouration makes it ideal for bathroom products although care should be taken with cosmetics and cleaning materials, many of which are acidic! Click here to find out how to care for marble.
Marble should not be confused with Travertine.
Travertine, whilst also composed of calcium carbonate, is in fact a dense limestone, which is a sedimentary rock. It is mostly used for flooring and wall cladding. Not suitable for kitchen worktops.
Engineered stone is a man made alternative to solid granite. Made by combining 92% natural stone particles, quartz and colouring in a resin matrix, engineered stones combine the best properties of granite with more consistent and brighter colours. Heat resistant and less brittle than granite, it is highly scratch-resistant and non-porous, making it ideal for kitchen worktops. We have a huge range of colours and surface textures from Quartzforms SpA, a state of the art factory in Germany.
is a new process combining a 12mm surface of Engineered stone bonded onto a lightweight substrate. This combined with the clean jointing properties of engineered stone allows us to make tops that appear to be much thicker whilst having a sensible weight, an important consideration in these health and safety conscious times!