It is shale of 1, 5 to 2, 5, and 2.5 to 4 cm. thicknesses, as there are thicker chunks for outdoors, like paving gardens etc.
These slates’ colour ranges from beige to pale yellow as it is a natural material.
It has a non-slip surface, which makes it ideal for patios, squares, sidewalks, etc. and can also be placed indoors as per customer specifications.