All natural marble with a unique coloring; Blue Oak Marble is the contemporary take on a classic. The Blue Oak Marble Grid Mosaic can be installed in interior/exterior settings; bathroom, kitchen, bedroom, living room, etc. Each individual chip is 3/4"x 1 5/16" and comes on a 12"x12.5" mesh sheet. All natural stone products have variation; these variances should be expected with certain deposits or impurities.