Our rock in January
I am assuming that this is a local rock(!) that wasn’t shipped in from some exotic location, in which case it is most likely Jura limestone. (Having said that, a lot of building materials from all over the place are shipped on the canal just below us in the valley!)
Jura limestone (Jura-Marmor) is the stone found all around this region and quarried locally for building material. In fact almost all the houses around here will have window sills made of this stone, and possibly floor tiles too. It is sanded down and polished to give it a smooth and shiny finish. It also often contains fossils.
Near my hometown in the UK sandstone is the local stone, used in buildings and stone walls.
Do you have stone quarried locally? Is it polished up or used in its natural form?