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Location: Rainbow granite is quarried in Brazil.
Description: Rainbow granite is a medium-grained, light pink, red to brown with darker intrusions multicoloured granite. This stone internationally may be nominated as a granite but in the area of application of the European Standard we are awaiting Clarification.
The veining and colour varies and a small sample of Rainbow granite may not be representative of the whole slab therefore swatch samples must be approved for large projects to ensure that the blocks are all extracted from the same quarry face for matching purposes. Ideal for both interior and exterior use, Rainbow granite is frost free and polish constant.
Technical and Physical Characteristics:
Compression tensile strength: 2060 kg/cm2
Tensile strength after freeze-thaw cycles: 1930 kg/cm2
Unitary modulus of bending tensile strength: 131 kg/cm2
Heat expansion coefficient: 0.0081 mm/m°C
Water imbibition coefficient: 0.003400
Mass by unit of volume: 2594 kg/m3
Granite: Granite is a common and widely occurring type of intrusive, felsic, igneous rock. Granites are usually medium to coarse grained, occasionally with some individual crystals larger than the groundmass forming a rock known as porphyry. Granites can be pink to dark grey or even black, depending on their chemistry and mineralogy.