Agate is a variety of chalcedony characterized by either transparency or color patterns, such as multi-colored curved or angular banding. Opaque varieties are sometimes referred to as jasper.

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chalcedony

citation

Wikipedia contributors. (2023, September 27). Chalcedony. In Wikipedia, The Free Encyclopedia. Retrieved November 2, 2023, from https://en.wikipedia.org/w/index.php?title=Chalcedony&oldid=1177486095

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https://github.com/davepinch/pinchy.cc/blob/master/content/topics/geology/minerals/chalcedony/agate/snippet-agate-1-1.md

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Cube (1997 film) (Wikipedia) Cube is a 1997 Canadian science fiction horror-thriller film directed and co-written by Vincenzo Natali. A product of the Canadian Film Centre’s First Feature Project, Nicole de Boer, Nicky Guadagni, David Hewlett, Andrew Miller, Julian Richings, Wayne Robson, and Maurice Dean Wint star as individuals trapped in a bizarre and deadly labyrinth of cube-shaped rooms.

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Chalcedony (Wikipedia) Chalcedony (/kælˈsɛdəni/ kal-SED-ə-nee, or /ˈkælsəˌdoʊni/ KAL-sə-doh-nee) is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. These are both silica minerals, but they differ in that quartz has a trigonal crystal structure, while moganite is monoclinic. Chalcedony’s standard chemical structure (based on the chemical structure of quartz) is SiO2 (silicon dioxide).

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