
FORTEZZA MONTORFANO
30 April 2001
FORTEZZA CEPPO
5 May 2001

L'ALTRA PIETRA
COLOSSEO Barge
Colour depth and strength of dark-grey G654 granite
FORTEZZA Diorite is inspired by the famous Chinese G654 granite, known for its anthracite grey tone dotted with black micro-crystals.
This sintered stone solution reinterprets the classic sesame grey look with a fine grain texture that enhances floors, ventilated façades, stairways and plazas.
Its compact, uniform surface pairs visual rigour with advanced performance—ideal for high-end modern architecture and premium refurbishments.

Advantages of FORTEZZA Diorite:
- Consistent colour: deep grey base and dark speckles remain identical on every slab, ensuring seamless large-format layouts.
- Extreme structural strength: sintered technology withstands heavy loads, freeze-thaw cycles, marine climates and chemicals without extra treatments.
- Design versatility: multiple formats suit public squares, commercial projects and minimalist interior walls.
Sizes | 40x80x2 cm (16"x32"x0.8") 60x60x2 cm (24"x24"x0.8") 45x90x2 cm (18"x36"x0.8") 60x120x2 cm (24"x48"x0.8") |
Description | FORTEZZA Diorite precisely recreates the black-speckled pattern of G654 in sintered stone. Its micro-granular finish delivers a compact, contemporary appearance, while the dark grey hue with graphite highlights adds understated elegance to any setting. |