Abstract: The invention relates to a natural stone panel floor, whereby the floor panels thereof (1) are laid at a distance from each other on an essentially flat base. The base panels (1) comprise, respectively, a groove (11) which is arranged on the lateral surface thereof (10) and respectively a plastic spacer (2) which is arranged between adjacent floor panels (1), said spacer supports a clamping crosspiece (20, 21) on both sides thereof, which is maintained in a clamped manner in the groove (11).