sedimentary
Yellow Jasper
Microcrystalline quartz, SiO2
AI-generated identification · may be incorrectHardness 7 on the Mohs scale, opaque yellow to brownish-yellow color, waxy to vitreous luster, and conchoidal fracture with no cleavage.
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Physical properties
Hardness 7 on the Mohs scale, opaque yellow to brownish-yellow color, waxy to vitreous luster, and conchoidal fracture with no cleavage.
Formation & geological history
Formed through the hydrothermal deposition of silica-rich fluids or precipitation in sedimentary basins, often occurring in ancient marine environments.
Uses & applications
Commonly used in cabochons, beads, ornamental carvings, and lapidary collections due to its ability to take a high polish.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry, prized by various civilizations for its striking earthy appearance.
Field identification & locations
Identify by its solid yellow coloration, microcrystalline texture, and lack of reactivity to acid; found worldwide in riverbeds and mountainous regions.
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