Aragonite, Blue

Blue aragonite is a pale turquoise blue colored variety of a calcium carbonate mineral forming in the orthorhombic type of crystal system with acicular crystals.  Aragonite is generally formed via physical and biological processes such as precipitation from freshwater and marine environments.  It exhibits a brittle tenacity, a vitreous luster, a transparent to translucent transparency, […]

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Aquamarine

Aquamarine is precious beryl of the blue or blue-green variety.  It is a beryllium aluminum silicate.  Its name came from a Latin expression meaning “seawater.”  Its astonishing sea blue color actually derives from iron impurities inside of colorless beryl crystal.  The most valuable and desirable aquamarine specimens exemplify a deeply saturated dark blue.  Aquamarine is […]

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