Troy is quarried near Antalya, Turkey. This is a sedimentary stone that is formed in hot springs and is composed of calcite calcium carbonate. All travertine stones will have natural cavities, or pits, visible in the stone that developed when carbon dioxide bubbles became trapped during the formation of the stone. Prior to honing, this travertine is filled with a color cement to fill in these cavities, and due to varying climate conditions, the color of the fill can differ between shipments. Arizona Tile also offers Troy as a product in our tumbled program, which will offer a multitude of mosaics and tile sizes that will provide a more unique style to any design. There will be noticeable variations in color and movement between pieces. Therefore, it is important and recommended that a range of this product be viewed before finalizing a purchase. As a natural stone product, it is recommended that this be sealed to extend its longevity.