Amazonite

Amazonite also known as Amazonstone is a green tectosilicate mineral made from microcline.[2][3] It has the chemical formulaK(AlSi3O8).[1][4]

Its name is taken from that of the Amazon River, from which certain green stones were formerly obtained, but it is doubtful whether green feldspar occurs in the Amazon area.[5]

Because of its bright green color when polished, amazonite is sometimes cut and used as a cheap gemstone, although it is easily fractured, and loses its gloss due to its softness.

Read More At:

https://en.wikipedia.org/wiki/Amazonite

 

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