Cathedral glass
Cathedral glass is transparent coloured sheet glass made by rolling. The name does not mean it is only used in cathedrals. It describes a clear, see-through glass, as opposed to opalescent glass, which is milky and lets less light through. It is made in smooth and textured finishes, including hammered, ripple and granite patterns.
Because it is transparent, cathedral glass gives strong, bright colour when light passes through it, which makes it a common choice for windows and for panels hung where the light is behind them. It is cheaper and more uniform than mouth-blown antique glass, and cuts predictably, so it is widely used by beginners and by professionals.
It is available in a wide range of colours, and can also be made in streaky and wispy mixtures.