Amazonite has a soft green to blue green color, often with thin white streaks interlacing the green. It forms blocky prismatic or tabular crystals with angles that are not quite ninety degrees. Because of its natural beauty it is used to make jewelry and other ornamental objects. Amazonite has a glassy iridescence and ranges from translucent to opaque. It is found in few places in the world and is associated with pegmatites. Amazonite has the chemical formula KAlSi3O8 or potassium aluminum silicate. It is the green variety of microcline feldspar. Feldspars are the most abundant mineral in the earth’s crust. Microcline is the common potassium feldspar found in pegmatites. However, the green variety of microcline feldspar is a somewhat rare occurrence. It is believed that the green color comes from traces of lead and water....
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