It is my favorite things to surf on the internet about crystals,a kind of them called Andalusite come to my eyes,which is impressed me very much.At first I was striking by its simple and well-distributed quality.then product which is made of it is very beautiful impressed me too.
A clear variety first found in Andalusia, Spain can be cut into an interesting gemstone.Faceted andalusite stones give a play of red, green, and yellow colors that resembles a muted form of iridescence, although the colors are actually the result of unusually strong pleochroism.It is associated with mica schist which increases crystal jewellery content in ultimate product and so it has not been exploited economically so far.
Andalusite is a common regional metamorphic mineral which forms under low pressure and moderate to high temperatures. Called Swarovski Lapis Crucifer in ancient texts. The minerals kyanite and sillimanite are polymorphs of andalusite, each occurring under different temperature-pressure regimes and are therefore rarely found together in the same rock. Because of this the three minerals are a useful tool to help identify the pressure-temperature paths of the host rock in which they are found.
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