Amazonite is an opaque sodium feldspar. It is also called Amazone stone and the name was derived from the Amazon. The color distribution is irregular but generally green or bluish green. The luster is vitreous. Deposits can be found in Colorado, Brazil, India, Kenya, Madagascar, Namibia, and Russia. Amazonite has been confused with chrysoprase, serpentine, and turquoise. It has a Moh's hardness of 6-6 ½ and streaks white. The fracture is uneven to splintery and it is brittle. This gem has double refraction, with a refractive index of 1.522-1.530. There is no pleochroism and a weak fluorescence.
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