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Occurrence |
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| Color : | Available in Black, Gray, Brown, Green, Shadow blue and Beige |
| Hardness : | 3 to 4 on Moh's Scale |
| Density : | 2.5 to 2.7 Kg/cm3 |
| Comprehensive strength : | Compressive strength is 60-170 N/mm2 |
| Porosity : | Quite low |
| Water Absorption : | less than 1% |
| Silica : | 15-18% |
| Ferrous oxide : | 3 (1-1.5%) |
| Iron (Fe2O3) : | 0.5%-1.5% |
| Alumina (Al2O3) : | 1 to 1.5% |
| Soda (Na2O) & Potash (Kro) : | Less than 1% |
| Lime (CaO) : | Less than 0.5% |
| Magnesia (MgO) : | Less than 0.5% |
Black Kotastone: |
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Basically Kotastone is sedimentary rock. Black Kotastone is fine grained variety for cladding and flooring purpose. Black Kotastone is finest stone for exterior and interior purpose. It is excellent stone owing to its low water absorption and non-slippery property. Features of Black Kotastone:
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Brown Kotastone: |
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Brown Kotastone is one of the famous stones, used for flooring and wall cladding. Brown Kotastone is tough and non-slippery; this property makes it perfect for flooring purpose. Brown Kotastone is non-porous variety. Brown Kotastone is widely used for Interior & Exterior, flooring, cladding, countertops, Vanities, etc. Features of Brown Kotastone:
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Gray Kotastone: |
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Gray Kotastone is one of the popular varieties of Kotastone. It is widely used for interior and exterior flooring and cladding. It is non-porous, non-slippery and resistance to weather. It looks great after polishing and finishing. Features of Gray Kotastone:
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Green Kotastone: |
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Green Kotastone comes in two shades, Greenish-Bluestone and Grayish-Green Kotastone. Greenish-bluestone Kotastone is widely used for exteriors, pathways, corridors, driveways, balconies, commercial buildings etc. Green Kotastone is famous for exterior purpose. This is an excellent stone to use for buildings. Features of Green Kotastone:
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Blue Kotastone: |
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Blue Kotastone is dense regular ocean blue colored stone. Blue Kotastone mainly used for gardens and landscapes, cladding and flooring, pathways of building and paving. Blue Kotastone can also have some greenish color shade. Features of Blue Kotastone:
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Yellow Kotastone: |
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Yellow Kotastone is a famous Kotastone for interior and outdoor flooring purpose. Resistance to weather, acids-alkyls property makes it perfect for flooring. It is tough and non-porous variety. Yellow Kotastone is rich yellow-golden shaded Kotastone. It looks lustrous after polishing. Features of Yellow Kotastone:
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