Siliceous stone is composed mainly of silica or quartz-like particles.
It tends to be very durable and relatively easy to clean with mild
acidic cleaning solutions. Types of siliceous stone include granite,
slate, sandstone, quartzite, brownstone and bluestone.
Calcareous stone is composed mainly of calcium carbonate. It
is sensitive to acidic cleaning products and frequently requires
different cleaning procedures than siliceous stone. Types of calcareous
stone include marble, travertine, limestone and onyx.
A polished finish on stone has a glossy surface that reflects light and emphasizes the color and marking of the material. This type of finish is used on walls, furniture tops and other items, as well as floor tiles.
A honed finish is a satin smooth surface with relatively little light reflection. Generally, a honed finish is preferred for floors, stair treads, thresholds and other locations where heavy traffic will wear off the polished finish.