Berna stone is a fine-grained textured limestone with traces of mineral and organic mixtures in its interior that give it a slight dynamism. The homogeneity of the background tone is altered by attractive nebulae that alternate leaden tones with pearly nuances, between which appear vein formations with mineral crystallisations of deeper tones, reinforced with the application of digital matter enhancing the naturalness of the surface. Sinuous relief decoration with continuous undulation complements the Berna collection. A subtle interpretation of the "wavy" trend centred on the idea of decorating with curves, saying goodbye to straight lines and embracing more organic shapes to soften the most natural and minimalist environments. With the Berna collection we can create surfaces of great continuity that function as calm and comforting backdrops, with a palette of neutral colours inspired by nature. The Natural tone is soft and slightly warm and organic, very versatile, connected to the earth. Marengo is a strong and serene tone, with more intense grey shades. Pearl is the most luminous shade, a light pearl grey with cooler shades.