sedimentary
Banded Jasper (Carved)
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness 6.5-7 Mohs; waxy to dull luster; cryptocrystalline structure; displays earthy bands of brown, tan, and dark gray.
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Physical properties
Hardness 6.5-7 Mohs; waxy to dull luster; cryptocrystalline structure; displays earthy bands of brown, tan, and dark gray.
Formation & geological history
Formed from silica-rich precipitates in sedimentary or low-grade hydrothermal environments, colored by iron oxides.
Uses & applications
Commonly used for lapidary work, decorative ornamental carvings, figurines, and cabochons.
Geological facts
Jasper has been carved into amulets and seals since antiquity across global cultures.
Field identification & locations
Identified by high hardness, lack of cleavage, conchoidal fracture, and opaque, banded earth tones; found globally including USA, India, and Madagascar.
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