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CLC (Korean: 씨엘씨; RR: Ssi-el-ssi, an initialism for CrystaL Clear [1]) is a South Korean girl group formed by Cube Entertainment.Their debut EP First Love was released on March 19, 2015, with five group members: Seunghee, Yujin, Seungyeon, Sorn, and Yeeun.
The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification. The word crystal derives from the Ancient Greek word κρύσταλλος (krustallos), meaning both "ice" and "rock crystal", [3] from κρύος (kruos), "icy cold, frost". [4] [5]
Crystal Clear (Jaci Velasquez album), 2000; Crystal Clear (David Dunn album), 2015 . Crystal Clear, a 2014 EP by David Dunn "Crystal Clear", a 1988 song from World Without End by the Mighty Lemon Drops
Quartz crystal demonstrating transparency. Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent and has often been used for hardstone carvings, such as the Lothair Crystal. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others. [37]
The word crystallography is derived from the Ancient Greek word κρύσταλλος (krústallos; "clear ice, rock-crystal"), and γράφειν (gráphein; "to write"). [2] In July 2012, the United Nations recognised the importance of the science of crystallography by proclaiming 2014 the International Year of Crystallography. [3]
Iceland spar, formerly called Iceland crystal (Icelandic: silfurberg [ˈsɪlvʏrˌpɛrk], lit. ' silver-rock ' ) and also called optical calcite , is a transparent variety of calcite , or crystallized calcium carbonate , originally brought from Iceland , and used in demonstrating the polarization of light .
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Cristallo is a glass that is totally clear (like rock crystal), without the slight yellow or greenish color originating from iron oxide impurities. This effect is achieved through small additions of manganese oxide. [1] Cristallo often has a low lime content, which makes it prone to glass corrosion (otherwise known as glass disease).