What Does a Marble Etch Mark look like?

Often we get customers calling the office and asking us what happened to their marble counter top.  It looked great when it was first installed, but now they notice frosty rings on the surface.  These are most often described as stains, but they are actually etch...

What to do with Slippery Limestone and Travertine around a Pool

   Recently, we worked at a very nice home in Discovery Bay on the California Delta.  The owner had a problem.  He has a beautiful backyard with pillow-cut limestone (stones that are rounded on the edges) surrounding his infinity pool and hot tub, over-looking his...