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Vitrolite tiling at Eglinton station in Toronto.. Pigmented structural glass was originally marketed under the name "Sani Onyx" by Marrietta Manufacturing. [3] [4] The company also used the name "Sani Rox", [3] while the term "vitreous marble" was coined by the firm as a general descriptive. [12]
Calcite alabaster also is known as onyx-marble, Egyptian alabaster, and Oriental alabaster, which terms usually describe either a compact, banded travertine stone [2] or a stalagmitic limestone colored with swirling bands of cream and brown. [3]
Chrysoprase (also spelled chrysophrase) is a green variety of chalcedony, which has been colored by nickel oxide. (The darker varieties of chrysoprase are also referred to as prase. However, the term prase is also used to describe green quartz and to a certain extent is a color-descriptor, rather than a rigorously defined mineral variety.)
Sněžník marble (sněžníkovský mramor) from Horní Morava, Ústí nad Orlicí District: light-coloured; Supíkovice marble (supíkovický mramor) from Supíkovice, Jeseník District: grey-white; Marble mis-nomers: Cetechovice marble (cetechovický mramor) from Cetechovice, Kroměříž District: coloured [c]
The dimension-stone industry classifies stone based on appearance and hardness as either "granite", "marble" or "slate". The granite of the dimension-stone industry along with truly granitic rock also includes gneiss , gabbro , anorthosite and even some sedimentary rocks .
Chrome chalcedony is a green variety of the mineral chalcedony, colored by small quantities of chromium. [4] Its name is derived from Mutorashanga, a small ferrochrome mining town in Zimbabwe where the mineral was discovered in the 1950s. [5] It is most commonly found in Zimbabwe, where it is known as Mtorolite, [6] Mtorodite, [7] or Matorolite ...