Over time, travertine takes on a natural patina, also known as antiquing, which is a darkening of the stone

Travertine has a tendency to darken as its iron compounds mix with oxygen. It can also show dark spots from ground-in dirt

For 13 years, heavy traffic, usage, dirt and spills had taken their toll on this travertine floor, located in the laundry room of

The travertine floor in this La Jolla rental was neglected and had taken a beating from tenants