` BCG Marble & Granite Fabricators Co., Inc. | Stone Details
Granite Education


  Marble is a calcareous rock with a mid-range of hardness, formed usually by fine grain crystals. This composition contributes to a mirror -like polish finish, which is exceptional in stone. It is suitable for internal use.


  Granite is an igneous rock of volcanic origin and is composed of 30% quartz and 60% feldspar, which give it a high range of hardness. It is very resistant to high wear, with superior abrasion resistance and compressive strength. It is available in a wide range of colours. Historically it used to be available only in a homogeneous grain, now it is available in veined and patterned varieties. Granite is an excellent material for internal and external building use because of its hardness and resistance to all types of weather.


  Travertine is a porous calcareous rock. Travertine may vary in colour from white to silver-grey, to yellow, red, and dark brown. Easy to work with: the surface is suitable for a honed, polished or antiqued finish. It is mainly used for internal applications; however it can also be used externally in warm climates.


  Onyx is a calcareous material with a very fine, tight grain and many veins running concentrically to one another. This translucent stone is synonymous with luxury living and has been used to decorate the living spaces of the rich and famous. It takes a high polish which is part of its great beauty.


  When the word 'stone' is used in the context of slab dimensional stone, it usually refers to limestone, slate and other sedimentary rock. Generally, limestone is rarely polished. limestone is suitable for internal use, and in block format is used in external applications.


  Quartzite has the same physical-mechanical features as granite. It has a high range of hardness, and is often used in external applications similar to granite, depending on the particular type. Quartzite is suitable for internal applications.


  A volcanic rock, Serpentine has a compressive strength similar to Granite. Generally it is a green colour, with lighter or darker shades. It sometimes includes some shades or red. It is generally suitable for both external applications (depending on the particular stone) and internal applications.


  Precious stone is now available in large format slabs: It is made from many beautiful stones including Quartz, Amethyst, Petrified Wood and Fossils. The slabs are 3 cm (l 1/4") and also 2 cm (3/4") thick, which makes it very suitable for further fabrication. Each slab is a unique work of art from nature. Important precaution: the stone should not be placed too close to intense heat, or any place where there is a sudden change in temperature. For internal uso only.


  Rare gemstones, such Lapis Lazuli, Malachite, Jasper and others are now available in large format slabs which are 3 cm (1 1/4") thick. The gemstone venner is hand selected from specimen pieces and comes with a white marble backing slab. These gemstone slabs create extraordinary bursts of colour. Important precaution: the stone should not be placed close to intense heat, or any place where there is a sudden change in temperature. For internal uso only.


  Mother of Pearl is an organic gem formed from protective layers of calcium carbonate, which line the inside of the pearl oyster shell. This is the same natural process and material as the pearl, and takes almost ten years to form. The beautiful iridescent colours you see in mother of pearl are caused by reflective light bouncing off the various layers of the shell. The Shellstone Collection, made up of large scale panels of specimen pieces of mother of pearl, have been expertly laid out to take full advantage of the natural beauty of the shell stone. Suitable for internal use.
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