Travertine is one of several natural stones that are used for paving patios and garden paths.It is sometimes known as travertine limestone, sometimes as travertine marble, these are the same stone, even though it is neither limestone nor marble.
The stone is characterized by pitted holes and troughs in its surface. Although
these troughs occur naturally, they suggest to some eyes that considerable
wear and tear has occurred over many years.
Some installers use a grout to fill these holes, whereas others leave them
open — travertine can even be purchased "filled" or "unfilled." It can be
effectively polished to a smooth, shiny finish and comes in a variety of colors
from grey to coral-red.
