Add an unexpected glimmer to tiled surfaces with Susan Jablon Mosaics Stainless Steel Collection Tiles. Exterior- and interior-rated (yes, they can be used in wet conditions such as a shower), the tiles feature a porcelain core that is fully wrapped with stainless steel. The tiles are glued to mesh for installation.
Below: Stainless Steel Running Brick Tile from the 4mm Stainless Steel Collection. It's light, easy to install, and mixes with glass tiles. $31 for a .74-square-foot sheet.
Below: The Classic size (3-by-6-inch) Stainless Brick Running Tile is available in a thicker 8mm option for $49 per .74 square foot.
Below: Stainless Steel Penny Round Mosaic Tile, also 4mm thick and about $31 per square foot.
Below: Other 8mm-thick options include (Below L): 1-by-6-inch Stainless Steel Bars in the Row and Column configuration at $45 per square foot, and (Below R) the 1-inch-square mosaic tile at $40 per square foot.