Kalispell is a warm and rusty natural thin stone veneer.  The word rusty or rust usually has a negative connotation, but in this case, it could not be more affectionate.  Kalispell has an unusually high iron content which oxidizes over time giving the stone vibrant and changing colors.  The stone itself is a natural quartzite that is extremely hard and durable.  The natural stone will not degrade in any way over time, however, it is important to note it can bleed.  Bleeding is the term used for when rainwater runs over the stone and can color the surface below it.  This is caused by the natural coloring from the iron and can be prevented by using a sealer on the stone.