Gemstone, sometimes called "the poor man's alexandrite" because of its similar coloring and its dichroism, showing brown, gold, and green when viewed at different angles. Originally mined in, and named after, Andalusia in Spain, but now mostly mined in Sri Lanka and Brazil. Also used in the making of certain types of porcelain and some optical products.
A very hard, orthorhombic silicate of aluminum, Al2SiO5, usually found in schist, slate or other metamorphic rocks and used to make various high-temperature materials and as a gem.
An`da*lu"site (#), n. Min.
A silicate of aluminium, occurring usually in thick rhombic prisms, nearly square, of a grayish or pale reddish tint. It was first discovered in Andalusia, Spain.
© Webster 1913.
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