Float glass manufacturers create low-iron glass, also known as extra-clear glass or optically clear glass, by reducing the amount of iron in the molten glass formula. This type is more transparent than regular glass.
Mirrored glass is another phrase used for reflective glass. It is glass that has been treated with a metallic substance and offers mirror-like properties.
Tinted glass is made by adding small amounts of metal oxide to the glass composition. This alters the transmission of solar energy and modifies the color without changing the basic properties of the glass.