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2. Translucent concrete - Wikipedia

   en.wikipedia.org/wiki/Translucent_concrete

   Translucent concrete (also: light-transmitting concrete) is a concrete based building material with light-transmissive properties due to embedded light optical elements — usually optical fibers. Light is conducted through the stone from one end to the other. Therefore, the fibers have to go through the whole object.

3. Transparency and translucency - Wikipedia

   en.wikipedia.org/wiki/Transparency_and_translucency

   In other words, a translucent material is made up of components with different indices of refraction. A transparent material is made up of components with a uniform index of refraction. [1] Transparent materials appear clear, with the overall appearance of one color, or any combination leading up to a brilliant spectrum of every color.

4. Alabaster - Wikipedia

   en.wikipedia.org/wiki/Alabaster

   Alabaster is a porous stone and can be dyed into any colour or shade, a technique used for centuries. [13] For this the stone needs to be fully immersed in various pigment solutions and heated to a specific temperature. [13] The technique can be used to disguise alabaster. In this way an imitation of coral that is called "alabaster coral" is ...

5. Curtain wall (architecture) - Wikipedia

   en.wikipedia.org/wiki/Curtain_wall_(architecture)

   Thin blocks (3 to 4 inches (76 to 102 millimetres)) of stone can be inset within a curtain wall system. The type of stone used is limited only by the strength of the stone and the ability to manufacture it in the proper shape and size. Common stone types used are: calcium silicate, granite, marble, travertine, limestone, and engineered stone ...

6. List of U.S. state minerals, rocks, stones and gemstones

   en.wikipedia.org/wiki/List_of_U.S._state...

   A 2010 effort led by State Senator Gloria J. Romero, a Democrat from Los Angeles, sought to remove serpentine from its perch as the state's official stone. Organizations such as the Asbestos Disease Awareness Organization have supported the move as the olive green rock is a source of chrysotile , a form of asbestos that can cause mesothelioma ...

7. Mica - Wikipedia

   en.wikipedia.org/wiki/Mica

   Micas are translucent to opaque with a distinct vitreous or pearly luster, and different mica minerals display colors ranging from white to green or red to black. Deposits of mica tend to have a flaky or platy appearance.