They come from natural material such as slate, marble, limestone, etc. and are processed to facilitate ease of fitting. Their thickness is from 1 to 3 cm. with embossed appearance for a more natural result; further dimensions 5-8-11-17 height at any length.
Can be placed in a row or a knitted pattern, with adhesive or cement. They are used for wall lining, fireplaces, kitchens etc. generally as cladding for both in and outdoors.
There are lots of colours, ochre , beige , blue , yellow , white etc.