Why the Marble Color Change to Yellow

The color of natural marble will change to yellow with use.
The main ingredient of natural marble is calcium carbonate, also have some other kinds ingredient.
Usually the ingredient that make the natural marble color change to yellow is Fe.
Exposed to air for a long time, the Fe oxidized. The marble color changed to yellow because the Fe oxidized.
When clearning with alkaline detergent also can make the marble color change to yellow sooner.

Common surface processing method for natural stone

There are many surface treatment of stone. It can be used according to the actual needs of users or in combination with the current architectural decoration to pursue nature, return to ancient times, and actual performance. The surface include: natural surface, Polished surface, Flamed surface, Line Chiseled surface, Bushhammered surface, Antique surface , Honed surface.