sedimentary
Agate with Quartz Crystals
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, waxy to vitreous luster, cryptocrystalline structure with transparent quartz crystal clusters, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, waxy to vitreous luster, cryptocrystalline structure with transparent quartz crystal clusters, 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 for ornamental carvings, polished display specimens, jewelry, and lapidary collections.
Geological facts
The banded patterns reflect successive layers of microscopic quartz crystals deposited in fluctuating fluid environments.
Field identification & locations
Identified by its distinctive concentric banding, waxy texture, and high hardness; commonly found globally in volcanic regions.
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