sedimentary
Yellow Jasper
Silicon Dioxide with iron inclusions (Quartz variety)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque yellow to brownish-yellow color, vitreous luster, microcrystalline structure, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque yellow to brownish-yellow color, vitreous luster, microcrystalline structure, and conchoidal fracture.
Formation & geological history
Formed by the accumulation of silicon-rich sediments in marine or terrestrial environments, often precipitated from hydrothermal solutions or silica-rich fluids.
Uses & applications
Widely used for ornamental carvings, polished cabochons in jewelry, and as a popular tumbled stone for collectors.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry. Yellow jasper is historically associated with protection and grounding.
Field identification & locations
Easily identified by its opaque yellow color and lack of cleavage. Found globally in alluvial deposits, riverbeds, and weathered silica veins.
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