Mineral Family: Feldspar

Chemical Composition: K[AISi3O8].
Cleavage: Perfect
Color: Green, blue-green
Crystal System: Triclinic; prismatic
Form/Habit: Short prismatic
Fracture: Conchoidal, uneven, splintery, brittle
Gravity: 2.56-2.58
Hardness: 6-6.5
Luminescence: Green (long wave) / Red (short wave)
Luster: Vitreous, dull
Streak: White
Transparency: Translucent to opaque

Amazonite Placeholder
Amazonite

Where does Amazonite come from?

Amazonite deposits have been found in Brazil, India, Kenya, Madagascar, Namibia, Peru, Russia, and the United States (Colorado and Virginia).

What is an Amazonite?

Amazonite is a rare blue-green Microcline, a type of Alkali Feldspar, which is in turn a Silicate mineral. Silicate minerals are the largest family of minerals, including more than 25% of all known minerals and 40% of all common minerals. In addition to being a major part of the Earth’s crust, Silicate minerals have also been found on the moon and in meteorites. Silicates are minerals which contain the elements Silicon (a light gray shiny metal) and Oxygen (a colorless gas). There are six main groups of Silicate minerals, and these main groups are further subdivided into secondary subdivisions, such as Quartz and Feldspar. Feldspar is a large mineral family in its own right and is subdivided into Alkali Feldspars (rich in Potassium) and Plagioclase Feldspars (rich in Calcium). The most common type of Alkali Feldspar is Microcline, which is typically white or pale yellow. Much more rarely Microcline may be blue-green, at which point it is called Amazonite and considered a semi-precious gemstone.

How is Amazonite formed?

Amazonite is a major component of most igneous rocks, and may also be found in sedimentary and metamorphic rocks. It is created when hot silica acid rich in aluminum and potassium shifts from being a gas/liquid into a solid compound. Trace particles of lead and water within the silica acid gives Amazonite its rich blue-green color, otherwise the silica acid would transform into the more common white Microcline.

How is Amazonite mined?

Typically mined from the primary deposits which still have their original relationship with the host rock. Amazonite is a relatively rare mineral. Historically, it was mined almost exclusively in the Ilmen Mountains of Russia where it was found embedded in the granite mountains. Today it is mined alongside granite and Pegmatite in the Ilmen and Ural Mountains of Russia, as well as the Rocky Mountains in the United States. It is also mined alongside Pegmatite in Minas Geris, Brazil and in Madagascar.

Is Amazonite natural?

Amazonite is a natural crystal, enhanced only by cutting and polishing.  Is often has a silvery iridescence that shimmers across the surface when the stone is moved.