sedimentary
Yellow Jasper
Silicon dioxide (microcrystalline quartz, SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque yellow to mustard color, waxy to dull luster, and microcrystalline crystal structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque yellow to mustard color, waxy to dull luster, and microcrystalline crystal structure.
Formation & geological history
Formed in sedimentary environments through the silica-rich precipitation or alteration of existing rock materials.
Uses & applications
Commonly used for ornamental carvings, polished cabochons in jewelry, and as a collector specimen.
Geological facts
Jasper has been used since ancient times for talismans and weaponry due to its toughness and fracture properties.
Field identification & locations
Easily identified by its non-porous feel, waxy surface when polished, and distinct opaque yellow coloration.
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