They are stones cut into cubes: 15x15x5cm or 30 x 15 x 5cm.
The thickness (height) of the blocks varies according to the handiness at 3-4 cm, 5-6 cm and 7-9 cm.
The colors are green, gray, brown, brown and green and mixed.
The substrate soil other than concrete may be sand or compacted soil.
They are used mostly on ramps, streets and squares etc.
The advantage of the cubes apart from the unique natural beauty is that they withstand extremely heavy use and with the spacing of the joints they are not slippery in big declination.