Stone library / Feldspar / Feldspar Varieties
Amazonite
A source-aware guide to amazonite identity, blue-green color, cleavage, treatment disclosure, jewelry use, buying questions, and practical care.
What amazonite is
Amazonite is the green to blue-green gem variety of microcline, a potassium feldspar with formula KAlSi₃O₈. The local reviewed source record lists Mohs hardness 6–6.5, specific gravity about 2.56–2.58, and refractive index about 1.522–1.530. A seller name or photograph cannot confirm that a blue-green object is amazonite rather than another feldspar, dyed stone, glass, or composite.
Color, texture, and source claims
Amazonite may be evenly blue-green or mottled with white feldspar patterns. Its color is associated with trace lead and structural water or defects, but appearance varies by material. Known deposits occur in Brazil, Madagascar, Russia, and the United States. Geographic origin should be treated as a documented claim, not inferred from color or matrix pattern.
Treatments and disclosure
Amazonite is commonly sold as untreated, but buyers should still ask whether a piece has been dyed, waxed, resin-impregnated, stabilized, filled, coated, or assembled. Treatment is not automatically unacceptable; it matters because it can change cleaning limits, repair options, durability, and price.
Jewelry durability
Amazonite is softer than quartz and has cleavage, so a sharp blow can chip or split it even when the surface looks well polished. Pendants and earrings usually receive less impact than rings or bracelets. For frequent wear, favor thicker cabochons, smooth edges, protective settings, secure drill holes, and honest disclosure of fractures or stabilization.
Cleaning and storage
Use lukewarm water, mild soap, a soft cloth or very soft brush, then rinse briefly and dry fully. Avoid ultrasonic and steam cleaning, abrupt heat, harsh chemicals, abrasive powders, and long soaking when treatment or construction is unknown. Store amazonite separately from harder gems that can scratch it.
Meaning and folklore boundaries
Amazonite is associated in modern crystal traditions with confidence, calm, communication, or luck. These are cultural or personal interpretations, not scientific evidence that the stone changes health, treats anxiety, improves communication, or guarantees financial outcomes.
What to ask before buying
Ask for the material identity, treatment status, dimensions, setting metal, fracture condition, care limits, return terms, and any basis for an origin claim. For an expensive or disputed piece, request an independent gemological report rather than relying on a scratch test or seller photograph.
Continue the material check
Compare labradorite and sunstone, then review hardness versus toughness and the jewelry cleaning guide.
Sources: the reviewed local Amazonite mineralogy record, Mindat’s amazonite reference, and the GemVerity editorial method. Last reviewed: 2026-08-29. This educational guide is not a gemological identification report.