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Types of Stone

Natural Stone

What is natural stone and how many kinds are there?
Natural stone is a term used to differentiate non-manufactured stone products such as limestone, travertine, marble and granite from man-made materials. There are many different types of natural stone, so we have highlighted below the most popular, all of which we use in our work.

Marble

What is it?
Marble is a metamorphic rock made out of limestone. When limestone is subjected to tremendous pressure for a long time it is crushed into marble. Marble is rarer and therefore more expensive than limestone. A lot of marble is white, but it can come in all different colours.
Interesting facts about Marble
The word marble comes from the Greek “marmaron”, meaning shining stone. The Taj Mahal in India and Marble Arch in London were built using marble. Marble is a relatively high porous material, therefore not recommended for kitchens.

Limestone

What is it?
Limestone is a sedimentary type of stone made from the shells of marine organisms. Pressure from other shells, and from the water and sand being washed over the shells, squashes them all together into rock. Thousands of years later, shifts in the sea patterns exposed this calcium-rock (limestone) on land, allowing it to be quarried. Because of its impurities, limestone comes in different colours and may be crystalline or granular, depending on how it was formed.
Interesting facts about Limestone
Travertine is also a limestone (it is actually somewhere between limestone and marble), though harder, and it can often be found in stalactite and stalagmite form in caves. Limestone has been popular as a building material throughout history and its use can be traced from the pyramids of Ancient Egypt to Medieval churches to 19th century European railway stations.

Granite

What is it?
Granite is formed when magma (molten rock) is forced between other rocks in the Earth’s crust. It cools slowly and crystallizes deep underground into granite rock. Because it is formed from hot liquid stone, the molecules inside this type of stone are mixed together, (instead of being made up of layers in the way that limestone or slate is) making it an extremely hard material.
Interesting facts about Granite
The word “granite” comes from the Latin word “granum”, meaning a grain. Mount Rushmore in the US is possibly the world’s most famous granite monument, but it has been used since ancient times for statues, buildings and monuments due to its tough durability. Here in the UK, the Diana, Princess of Wales Memorial Fountain in London’s Hyde Park is made from Cornish granite.

Engineered Quartz

What is it?
Quartz is a man-made, engineered stone. It is made with a process that involves blending the natural aggregate with a resin and then evacuating air with a vacuum while vibrating and applying pressure to the mix. Heat is then applied to relieve stress in the finished product. The result is a slab of non-porous and relatively stable surfacing material.
Interesting facts about Engineered Quartz
It is made with the Breton Process: consists of blending the natural aggregate with a resin; evacuating air with a vacuum, while vibrating and applying pressure to the mix. Heat is then applied to relieve stress in the finished product. The result is a slab of non-porous and relatively stable surfacing material.
An average size of a slab is 1400mm x 3000mm and common thicknesses are 10, 20 and 30mm. A slab of 30mm engineered stone weighs around 295 kg, therefore careful attention to the safety of users is crucial.
Advantages of Quartz Surfaces
  • Non porous – resistant to water and staining
  • No sealing required
  • Colour range – flat tones and exotic colours
  • Colour consistency
  • Resistance to chipping and scratching

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