Black. Ref # 900
Glass is a stable non-porous material. This makes it resistant to staining and damage by chemicals or mould. Glass mosaic tiles have superior colour retention qualities.
Unlike other materials of decorative value, glass tiles do not need much time to be invested in their maintenance.
Another advantage of glass mosaic tiles which is relevant to the environment at large is the reduced energy required for production. The energy consumption may be about half of that required for manufacturing ceramic tiles.