MateriaNatural Sandstone Surface FinishedHoned,Flamed,Bush-hammered,Brushed,Nature,Mushroom,Sawn etc Finished ProductsFloor tiles,Wall cladding,Countertops, Windowsills,Special-shaped tiles,Small slabs etc UsageIndoor and Outdoor SizeStandard size for tile: 305x305x10mm (12"x12"x3/8"); 457x457x12mm (18"x18"x1/2") 400x400x12mm (16"x16"x1/2"); 300x600x12mm (12"x24"x1/2") 400x400x20mm (16"x16"x3/4"); 300x600x20mm (12"x24"x3/4") 400x600x20mm (16"x24"x3/4"); 600x600x20mm (24"x24"x3/4") Half slab: 60~100upx180~250upx2~3cm Step: 100~150x32~35x2~3cm or as per your request Riser: 100~150x15~30x2cm or as per your request Customized sizes are accepted Delivery TimeIn 15-30 days PaymentT/T,Western Union,MoneyGram MOQ50 Square Meters PackageGood wood create and strict fumigation Black sandstone tiles will change in appearance and style over the years, and some people will choose sandstones, while others will have no problem with their tiles changing over time.Sandstone cannot match slate or granite in terms of durability, but it is strong enough to survive decades if properly maintained and cannot be adapted for its durability. The way your sandstone floor looked when it was laid, it will not behave even after 10 years, even with perfect maintenance. Sandstone floors can develop a personality over the years, and that can be seen as part of their beauty. It can survive age just as well as any other type of tile, if not better than granite or slate tiles, so it can be a good choice for a home with a long history of weathering as it ages.Although it does not have the same hardness as granite or slate, in some cases this can be a good thing. Although not as hard as granite and slate, sandstone can withstand even the most extreme weather conditions such as rain, snow and sun. Those who are interested in sandstone tiles for their bathroom floor gain traction and safety when they get wet. Remember, too, that you should never use any acid cleaners or soak sandstone tiles in water. Consider that cleaning sandstones can tarnish the shine of the tiles, so polish them with wax, a soft cloth or an electric buffer before any other cleaning. If you use black sandstone tiles in the bathroom, especially if you want to use them as a tile floor, regular sealing of the tiles is an essential maintenance task. If you want an annual seal, you should also consider sealing your sandstone tiles at least once a year, if not more often.Sandstone price website:http://www.purchasestones.com/sandstone/