Golden Gate Quartzite is quarried from a pit quarry in China. This is a metamorphic stone which evolved from a sandstone, due to intense heat and pressure. Because it has evolved from a sandstone, it is also classified as a sedimentary stone. Golden Gate lacks iron minerals that have the potential for rusting and is much denser than others, making it one of the few quartzite products that is suitable for wet area applications. This material can also be installed in steam shower applications and freeze-thaw settings. Arizona Tile also offers Golden Gate as a product in our tumbled program, which will include 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.