Glass tile introduces complexities to the installer. Since glass is more rigid than ceramic or porcelain tile, glass tiles break more readily under the duress of substrate shifts.
Glass was used in mosaics as early as 2500 BC, but until the 3rd Century BC, innovative artisans in Greece, Persia and India created glass tiles.
Special glass tiles have been coated on the back side with a receptive white coating. This has allowed impregnation of heat-transfer dyes by a printing process reproducing high resolution pictures and designs. Custom printed glass tile and glass tile murals exhibit the toughness of glass on the wearing surface with photo-like pictures.