Marble-Limestone Portoro / Nero Portoro
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Marble-Limestone
Portoro / Nero Portoro
Limestone / marble
Documented as a marble-limestone, this stone has a black, gold palette. The recorded appearance includes gold calcite veining. Recorded applications include luxury feature walls and table tops.
Stone familyMarble-Limestone
Primary colourBlack
Seed / needs supplier validation verification · Reference STN-0000268
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Specification snapshot
Indicative catalogue data. Verify the exact stone, finish, thickness and current test certificates before specification.
Mohs hardness3-4
Water absorption0.1-0.5 %
Compressive strength70-130 MPa
Flexural strength8-15 MPa
Density2650-2750 kg/m³
PorosityNot reported
Material profile
Character & application
- Common finishes
- Polished, honed
- Typical uses
- Luxury feature walls, table tops
- Exterior suitability
- Interior preferred
- Frost resistance
- Variable
- Recorded colour palette
- Black, Gold
- Slab variation
- V3 Moderate variationModerate variation: veining, colour or pattern can change between slabs.