Desert Sunset Sandstone Coasters - Handcrafted Drink Coasters (4 Pc) for Home and Kitchen table, Surface Protection. Natural Stone Absorbent

This is natural sandstone was formed 180 million years ago by wind and water. The color and design were induced by a mineral spring containing iron oxides. This beautiful product has not been altered in any way, only cut into shapes and then heat treated to bring out the oxidized colors.