mineral
Blue-green tumbled stone (possibly amazonite)
Uncertain from the image; possibly amazonite, a variety of microcline feldspar (KAlSi₃O₈)
AI-generated identification · may be incorrectOpaque to translucent, polished blue-green surface with pale mottling; amazonite has Mohs hardness 6–6.5, vitreous luster, and a triclinic crystal structure. The photo alone cannot confirm the identification.
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Physical properties
Opaque to translucent, polished blue-green surface with pale mottling; amazonite has Mohs hardness 6–6.5, vitreous luster, and a triclinic crystal structure. The photo alone cannot confirm the identification.
Formation & geological history
If amazonite, it crystallized in potassium-rich granitic pegmatites as magma cooled; such deposits occur in rocks of many geological ages.
Uses & applications
Tumbled stones are used for collecting, décor, and jewelry; amazonite is also used as a decorative gemstone.
Geological facts
Amazonite’s distinctive color is associated with trace lead and water-related defects in its feldspar structure.
Field identification & locations
A hardness or mineral test and closer inspection would help distinguish amazonite from other blue-green stones or dyed material. Common sources include Brazil, Russia, Madagascar, and the United States.
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