mineral
Amazonite
K(AlSi3O8) - Microcline
Hardness: 6-6.5 Mohs; Color: Pale green to turquoise blue; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific gravity: 2.56-2.58
- Hardness
- 6-6
- Color
- Pale green to turquoise blue
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 6-6.5 Mohs; Color: Pale green to turquoise blue; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific gravity: 2.56-2.58
Formation & geological history
Formed in plutonic rocks such as pegmatites or granites. The green color is derived from small amounts of lead and water within the feldspar structure.
Uses & applications
Primarily used as a gemstone for jewelry, cabochons, and ornamental carvings. Also valued by mineral collectors for its unique color.
Geological facts
Named after the Amazon River, though it was later discovered it is not actually found there. It is often called the 'Hope Stone' in metaphysical circles.
Field identification & locations
Identify by its distinctive blue-green color and typical white streaks (perthitic lamellae). Found in Russia, Brazil, Ethiopia, and Colorado, USA (notably the Pikes Peak area).
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