Marble is a centuries-old building material that is timeless in its use and the applications are endless.  A metamorphic rock by definition, marble is comprised of the shells of sea creatures deposited, heated, and compressed over millions of years to form the material you see today.  It has a soft and warm appearance that is unmatched by man-made imitators.  However, marble is significantly softer than granite and, being comprised of calcium rich minerals, is prone to etching from acids.  Beverages and common cooking items such as vinegar, colas, and red wine can etch a marble surface.  This creates the appearance of a dull spot on your shiny new surface.  We recommend that marbles used as work-surfaces have a honed finish rather than a full gloss.  This minimizes the appearance of etch marks and slight surface damage. 

Limestone, travertine, calcite, and crystaline are all cousins in the sense that they are calcium based stones.  They have similar characteristics in use, though they differ in appearance.

With the proper set of expectations, marble will give you a lifetime of service.  It will also change in appearance over the years.  It will certainly develop a patina through use.  Many feel that the patina is part of Marble's appeal.  Similar to a quality leather that changes over time and develops wear-patterns, the natural beauty come out through wear.