gemstone
Tumbled Agate
Silicon dioxide (Chalcedony)
AI-generated identification · may be incorrectHardness of 6.5-7 on Mohs scale, waxy to vitreous luster, microcrystalline structure, and smooth tumbled surface displaying brownish-yellow banding.
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Physical properties
Hardness of 6.5-7 on Mohs scale, waxy to vitreous luster, microcrystalline structure, and smooth tumbled surface displaying brownish-yellow banding.
Formation & geological history
Formed through the deposition of silica-rich groundwater in hollows of igneous and sedimentary rocks over millions of years.
Uses & applications
Commonly used in jewelry, decorative items, and lapidary arts as a tumbled pocket stone.
Geological facts
Agate has been used since ancient times for ornamentation, seals, and talismans due to its durability and rich color variations.
Field identification & locations
Easily identified by its conchoidal fracture, waxy luster, and microcrystalline hardness. Found globally in volcanic rock cavities.
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