Mineral
Dyed Agate
SiO2 (Silicon Dioxide) - Chalcedony variety
AI-generated identification · may be incorrectHardness 6.5-7, bright blue color (artificially dyed), waxy luster, microcrystalline quartz structure, conchoidal fracture
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Physical properties
Hardness 6.5-7, bright blue color (artificially dyed), waxy luster, microcrystalline quartz structure, conchoidal fracture
Formation & geological history
Forms in volcanic rocks or ancient lavas as cavity fillings. The bright blue color is a result of artificial dyeing processes, often using aniline dyes on natural gray/white agate.
Uses & applications
Used in ornamental jewelry, decorative items, and craft projects.
Geological facts
Naturally occurring blue agate exists (like Blue Lace Agate), but the vivid, uniform blue with striking white banding seen here is almost always the result of a dyeing process that has been used since Roman times.
Field identification & locations
Identifiable by its banding patterns characteristic of agate, combined with an unnaturally vibrant color. Found worldwide before dying, with heavy processing often done in Brazil or China.
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