Scientific Name: Microcline variety of Feldspar
Group: Silicates – tectosilicates
Chemical composition: KALSi3O8
Hardness: 6 to 6.5
Formation: Triclinic,; Short prismatic form, conchoidal to uneven, brittle fracture.
Principal Sources: Brazil; Russia; Colorado, USA
Special Notes: Amazonite, named after the Amazon River, is a blue green specimen of microcline feldspar. The Russian variety is noted for its deeper teal color and white streaks.