The Geo Glass Brick 12″ x 12″ Glass Mosaic in Blue is perfect for floors (interior), walls/backsplashes (interior and exterior), and pools. Glass iridescence results from using clear glass with 8 mm thickness, while the base is made of opaque color. The result is a material with unique visual depth, were sophistication is achieved by the sparkles created by the reflection of light. $27.15/sq ft. Buy here.