Grigio Sardegna Granite is a classic and robust Italian natural stone known for its coarse grain texture and predominantly light to medium grey coloration. It is quarried from several well-known sites across Sardinia, including Alà dei Sardi, Irgoli, Ozieri, Buddusò, and Tempio Pausania, all located in the Provincia di Olbia-Tempio.

Grigio Sardegna Granite – Description

Origin Country: Italy

Region: Sardinia

Quarry Locations: Alà dei Sardi, Irgoli, Ozieri, Buddusò, Tempio Pausania

Color and Texture

Color Range: Light to medium grey, with consistent tonality throughout the surface. Subtle variations due to coarse grain distribution.

Texture: Coarse-grained crystalline structure. Visibly uniform grain size, often consisting of interlocking quartz, feldspar, and mica minerals. Clean, neutral appearance suitable for modern or traditional aesthetics.

Pattern: Highly homogeneous and consistent, making it ideal for large-scale architectural projects requiring visual uniformity.

Physical and Mechanical Properties

• Water Absorption : 0.22 – 0.30 %
• Bulk Density : ~2600 kg/m³
• Compressive Strength : 203 MPa
• Flexural Strength : ~13.9 MPa
• Porosity : ~0.4 – 0.8 %
• Mohs Hardness : ~6 – 7
• Slip Resistance (R-rating) : R10 – R12 depending on finish

Chemical and Mineral Composition (% by weight, approx.)

• SiO₂ (Silicon Dioxide) : 65–75%
• Al₂O₃ (Aluminum Oxide) : 12–15%
• K₂O (Potassium Oxide) : 4–6%
• Na₂O (Sodium Oxide) : 3–5%
• CaO (Calcium Oxide) : 1.5–2.5%
• Fe₂O₃ (Iron Oxide) : 1–2%
• MgO, TiO₂, others : ≤1% each

Primary Minerals:

• Quartz
• Plagioclase
• Feldspar
• K-Feldspar
• Biotite and/or Muscovite Mica

Applications

Grigio Sardegna Granite is highly versatile and well-suited for both indoor and outdoor architectural uses due to its strength, weather resistance, and aesthetic consistency.

Exterior Applications

• Façade cladding
• Urban furniture
• Paving and kerbstones
• Monuments and memorials

Interior Applications

• Flooring and wall tiles
• Kitchen countertops
• Vanity tops
• Staircases and risers
• Fireplace surrounds

Cutting Sizes (cm)

Slabs:

• Standard: 2 cm and 3 cm thickness
• Dimensions: ~280–320 × 160–200 cm

Tiles (cut-to-size):

• 30 × 30
• 40 × 40
• 60 × 30
• 60 × 60
• 80 × 80
• 100 × 100
• Custom sizes upon request

Surface Finish Options

• Polished : Glossy surface, rich color definition. Best for interiors.
• Honed : Smooth matte finish, slip-resistant, good for floors.
• Flamed : Coarse textured surface, excellent slip resistance.
• Bush-Hammered : Rough tactile feel, high anti-slip, ideal for exteriors.
• Sandblasted : Subtle texture and anti-slip for facades or paving.
• Leathered : Soft, textured feel, elegant and fingerprint-resistant.
• Sawn : Raw finish, used for structural applications.

Maintenance

Durability: Extremely hard and weather-resistant, low porosity.

Sealing: Not strictly necessary but can be sealed for additional stain resistance.

Cleaning: Use neutral pH cleaners; avoid acidic solutions.

Outdoor Use: Excellent resistance to freeze-thaw cycles and UV rays.

Summary

Grigio Sardegna Granite is a dependable and elegant choice for architectural and design projects requiring a uniform light to medium grey coarse-grained granite. Its exceptional mechanical strength, low water absorption, and versatile surface finishes make it ideal for both high-traffic interior spaces and demanding exterior environments.