sedimentary
Agate in matrix
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy luster, microcrystalline quartz structure, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy luster, microcrystalline quartz structure, and conchoidal fracture.
Formation & geological history
Formed in cavities of volcanic and metamorphic rocks through the deposition of silica-rich groundwater over millions of years.
Uses & applications
Used primarily in lapidary arts, decorative items, jewelry making, and collector displays.
Geological facts
Agate banding represents successive layers of silica deposition inside ancient rock cavities.
Field identification & locations
Identify by its distinct waxy appearance, microcrystalline texture, and hardness that scratches glass easily.
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