This is Slate which was formed in deep ocean waters, so there is virtually no quartz in these slates. The slow sedimentation in deep water, without bioturbation resulted in a perfect slate with thin parallel layers. After metamorphose and uplift, an perfect slate was formed, which can be split in large tiles, even slabs. The absence of pyrite and other impurities makes it very well suited for roofing slate. Large floor slates can be used natural split in sizes 60/60/1 cm, showing some slight wavy surface, but even enough to use indoors, giving it a high class effect. It’s possible to hone this stone, making it perfect flat, but used
less than the natural split one. Stone is very hard and shatterproof on the split surface, horizontally there is no natural splitting taking place after installation. Maintenance is very easy, no sealing is required.