Hard Blue is a limestone from Portugal with a blue homogeneous color and thin grain. It has some dark blue dots, lighter and darker areas and, sometimes, a distinct dark blue vein.
Abrasive treatments with repeated applications result in a shiny surface, highlights the colour and properties of the natural stone.
Splitting stone either by hand or by machine so that the surface exhibits a natural quarry texture.
Blasting silica sand against the material through an air gun and generates very small craters.
Hitting the material, with a masonry tool called a bush hammer and generates uniformly distributed craters of different sizes over the surface of natural stone.
Smooth surface using abrasive brushes under high pressure and generates a touch-sensitive surface.
Stone is scraped so that the surface exhibits a texture with straight reliefs and natural colours.
Brushing the slab with a range of brushes and the result is a slightly undulating surface, very soft, warm and smooth to the touch.
A soft finish is identical to the polished finish, the surface is smooth but without glare or light reflections.
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