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Technical record

The published figures, and where they disagree

These are the figures published for the material, tested to EN standards. They are not a supplier's description of a block.

Test values attributed to the marble laboratory of the Politecnico di Torino. Where a figure is ours rather than published, it is marked as ours.

Water absorption
0.04% to 0.12% (published values across sources)
Apparent density
2710 kg/m³ (both published sources agree)
Open porosity
0.30% (mean) · 0.30 (standard deviation)
Flexural strength
21.2 to 25.3 MPa (published values across sources)
After 48 frost cycles
20.1 MPa (mean) · 6.0 (standard deviation)
Compressive strength
89.4 to 175 MPa (published values across sources)
Compression after freezing
163 MPa (after freezing)
Slip resistance, honed
43 dry · 16 wet
Abrasion resistance
0.27 (coefficient relative to Granite St. Fedelino)
Impact resistance
32 cm minimum fall height
Knoop hardness
1128 MPa
Mohs hardness
3 to 4
Thermal expansion
4.0 × 10⁻⁵ per °C·K
Mineral composition
Calcite 95-98% · Dolomite 1-3% · trace quartz, iron oxides and mica

What this stone asks of you

  • A heavily brecciated structure. The stone can be brittle along the white calcite fault lines, so edge profiling needs care at the corners, and slabs normally arrive resin-backed.
  • The block carries naturally formed cracks. If they are not repaired during processing, the finished piece is imperfect - so the question of whether a crack can be avoided has to be asked before the size is fixed.
  • Within one block the slabs differ from each other in colour distribution and in the movement of the grain. Two blocks do not carry the same yellow. Slab grouping is a decision, not an afterthought.
  • Calcite 95-98%. The stone is acid-sensitive: food, drinks and cleaners etch it and dull it. A penetrating sealer reduces absorption and does not make it acid-proof.
  • Traditionally an indoor stone. The visible fracture structure is the reason it does not belong in a heavily trafficked exterior position.

Keeping it

  • Clean with a pH-neutral cleaner made for marble, on a soft cloth, sponge or non-abrasive mop. Avoid vinegar, lemon-based cleaners, acidic descalers and abrasive compounds.
  • Seal after installation and re-seal on a 6-12 month cycle, depending on the finish, the application and the condition of the stone.
  • On a polished floor, directional lighting makes etching and residue more visible. Entry protection and steady routine cleaning do more for the surface than aggressive periodic stripping.
  • Furniture feet get felt pads. Cutting boards and coasters go on the counter. Spills are blotted, not wiped.
Enquiry

Tell us what the job needs

Tell us the application, the size and the finish you need, and we will come back with what we can actually supply.

There is no checkout here and there is no price list. A stone enquiry is an agreement about material, size, finish and destination, and the answer depends on those four things. Send them and the reply carries what can actually be shipped.

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