is manufactured with UV stable colored glass and can be used in the same locations as standard clear glass blocks. The second type utilizes a colored material (dye or transparent paint) which is injected into the hollow center of the blocks to form a permanent coating, enabling vibrant colors to be achieved which are not possible with colored glass. However, the colored coating may not be UV stable and can fade in bright sunshine over time, and may therefore not be suitable for all locations. 19th century precursors Falconnier Modern glass bricks were preceded by Falconnier Hollow Glass Bricks in the late nineteenth century. Falconnier Bricks were blown glass bricks available in multiple colors and were formed in molds while the glass was molten. They could be used for walls or roofs and were joined together with wire and cement. The suggested use for Falconnier glass bricks was in greenhouse construction due to the non-conductivity of the glass for temperature control and lack of porosity of glass for moisture control. They were touted for not tarnishing, trapping dust, or retaining water. Prisms Vault lights in sidewalks, which utilized prism lighting, were one of the first steps towards the modern hollow glass brick. At the end of the nineteenth century glass prisms became a popular way to diffuse light into spaces that would otherwise be difficult or unsafe to light via flame-based oil lamps (e.g. basements underneath sidewalks). Examples of architectural use Real-Time Control Building #3 in Edmonton, Canada. Crown Fountain in Chicago, United States. Maison de Verre (for House of Glass) in Paris, France Michigan State Capitol in Lansing, Michigan Hermès luxury retail space in Ginza, Tokyo, Japan by Renzo Piano Streamline Moderne Ibrox Stadium, Glasgow Österreichische Postsparkasse in Vienna, Austria by Otto Wagner Raphael's Refuge, outside of Flatonia, Texas See also Bottle wall References External links "Architects are Rediscovering Glass Block"—Masonry Magazine, 2003 Masonry Glass architecture Building materials