There are a bunch of options you can select from when it comes to selecting pool tiles - porcelain, glass, natural stone, etc. However, glass pool tiles are the most popular one - considering the fact they shimmer underwater giving it an ocean look. But they are a little hard on the pocket, so if budget is your primary concern then I’ll suggest you go for porcelain tiles. You can find some amazing pool tile options here. Pillowed Squares Glass Mosaic Tile, Classic 2X2 Squares Blue Glossy Ceramic Mosaic Tile, and Stacked Squares Blue Glossy Glass Mosaic Tile are some of the best options.