Crooked Subway Tile . Examples of glass tile that can be used as tile edge trim include: There are a lot of different glass tiles available these days. Uneven Large Porcelain Rhombus Tiles White for Kitchen Backsplash Wall from www.mm-mosaic.com If you feel like you didn’t line it up right you can easily reposition the tiles. Rated 5 out of 5 stars. Although, unlike natural stone, the edge is usually finished without any additional steps.