Natural Stone

Elegance is attention to detail and Natural Stone stems from this assumption. It revisits the ancient taste of slates coming from northern lands, with consistency and sinuous, chromatic harmony.

Certified
Quality
Learn more
Natural Stone

It reveals the story of time and its infinite passage, and represents the extraordinary force of nature and her amazing aesthetic simplicity, evoking a sober elegance, the daughter of modernity.

Print this page
Specification referenceE.N. 14411 . Appendix G. Group BⅠa. GLTest methodReference valueDeclared value
Pendulum friction testBS-7976->36 wet 
Dynamic coefficient of friction (section 9.6 ANSI A 137.1 2012)DCOF>0,42 wet> 0,42 wet 
Barefoot slip resistanceDIN-51097-Cl. A+B 
Slip resistance with shoesDIN-51130:2010-R10 
Slip resistance with shoes-R11
GRIP
 
Glaze crazing resistenceISO-10545-11Richiesta / Required / Requise / Gefordert / RequeridaRESISTE / RESISTANT / RÉSISTE / ERFÜLLT / RESISTE 
Frost resistanceISO-10545-12Richiesta / Required / Requise / Gefordert / RequeridaRESISTE / RESISTANT / RÉSISTE / ERFÜLLT / RESISTE 
Resistance to low concentrations of acids and alkaliISO-10545-13Come dichiarato dal produttore / See manufacturer’s declaration / Selon déclaration du producteur / Entsprechend der Herstellerangaben / Tal como declara el fabricanteGLA 
Resistance to domestic chemicals and additives for swimming poolsGB minimo / GB minimum / GB minimum / GB mindestens / GB minimoGA 
Resistance to stainingISO-10545-14classe 3 minimo / class 3 minimum / classe 3 minimum / klasse 3 mindestens / classe 3 mínimoCl. 4 
Maximum right-angle deviation, in %, in relation to the corresponding production dimensionsISO-10545-2±0,5% (±2 mm)± 0,2% 
Maximum straightness deviation, in %, in relation to the corresponding production dimensions±0,5% (±1,5 mm)± 0,1% 
Admitted deviation, in %, of the average thickness of each tile from the production dimensions±5% (±0,5 mm)± 5% 
Surface qualityIl 95% min delle piastrelle deve essere esente da difetti visibili / At least 95% of the tiles must be free from visible flaws / 95% min des carreaux ne doivent présenter aucun défaut visible / Mindestens 95% der Fliesen müssen frei von sichtbaren / mín. el 95% de las baldosas tiene que estar exento de defectos visiblesCONFORME / CONFORMING / CONFORME / KONFORM / CONFORME 
Flatness (centre curvature / edge curvature / warpage)±0,5% (±2mm)± 0,35% 
Length and width: admitted deviation, in %, of the average size of each tile from the production dimensions±0,6% (±2 mm)± 0,15% 
Amount of water absorbed, in percentageISO-10545-3E<0,5%average value 0,08% 
Breaking strength in N (thickness >= 7,5 mm)ISO-10545-4≥1300 Newtonaverage value 3200 N 
Bending strength in N/mm2>35 N/mm2average value 50 N/mm2 
Resistance to abrasion of glazed tilesISO-10545-7Come dichiarato dal produttore / See manufacturer’s declaration / Selon déclaration du producteur / Entsprechend der Herstellerangaben / Tal como declara el fabricante3 (Mineral, Coal); 4 (White, Fossil, Cream) 
Thermal shock resistanceISO-10545-9-RESISTE / RESISTANT / RÉSISTE / ERFÜLLT / RESISTE 
Specification referenceE.N. 14411 . Appendix G. Group BⅠa. UGLTest methodReference valueDeclared value
Slip resistance with shoesDIN-51130:2010-R11 
Frost resistanceISO-10545-12Richiesta / Required / Requise / Gefordert / RequeridaRESISTE / RESISTANT / RÉSISTE / ERFÜLLT / RESISTE 
Resistance to high concentrations of acids and alkaliISO-10545-13Come dichiarato dal produttore / See manufacturer’s declaration / Selon déclaration du producteur / Entsprechend der Herstellerangaben / Tal como declara el fabricanteUHA 
Resistance to domestic chemicals and additives for swimming poolsUB minimo / UB minimum / UB minimum / UB mindestens / UB minimoUA 
Resistance to low concentrations of acids and alkaliCome dichiarato dal produttore / See manufacturer’s declaration / Selon déclaration du producteur / Entsprechend der Herstellerangaben / Tal como declara el fabricanteULA 
Resistance to stainingISO-10545-14-Cl. 3 
Flatness (centre curvature / edge curvature / warpage)ISO-10545-2±0,5% (±2mm)± 0,35% 
Length and width: admitted deviation, in %, of the average size of each tile from the production dimensions±0,6% (±2 mm)± 0,15% 
Maximum right-angle deviation, in %, in relation to the corresponding production dimensions±0,5% (±2 mm)± 0,2% 
Maximum straightness deviation, in %, in relation to the corresponding production dimensions±0,5% (±1,5 mm)± 0,1% 
Admitted deviation, in %, of the average thickness of each tile from the production dimensions±5% (±0,5 mm)± 5% 
Surface qualityIl 95% min delle piastrelle deve essere esente da difetti visibili / At least 95% of the tiles must be free from visible flaws / 95% min des carreaux ne doivent présenter aucun défaut visible / Mindestens 95% der Fliesen müssen frei von sichtbaren / mín. el 95% de las baldosas tiene que estar exento de defectos visiblesCONFORME / CONFORMING / CONFORME / KONFORM / CONFORME 
Amount of water absorbed, in percentageISO-10545-3E<0,5%average value 0,08% 
Bending strength in N/mm2ISO-10545-4>35 N/mm2average value 52 N/mm2 
Breaking strength in N (thickness >= 7,5 mm)≥1300 Newtonaverage value 14000N 
Resistance to deep abrasion of unglazed tilesISO-10545-6<175 mm3average value 140 mm3 
Thermal shock resistanceISO-10545-9-RESISTE / RESISTANT / RÉSISTE / ERFÜLLT / RESISTE 
Bureau Veritas Natural Stone
Bureau Veritas Natural Stone Outdoor
GREENGUARD
LEED Natural Stone
LEED Natural Stone 20mm