sedimentary
Yellow Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, yellow to mustard color, waxy to vitreous luster, and opaque with a cryptocrystalline structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, yellow to mustard color, waxy to vitreous luster, and opaque with a cryptocrystalline structure.
Formation & geological history
Forms through the deposition of silica-rich fluids in sedimentary basins or volcanic ash environments, often dating back hundreds of millions of years.
Uses & applications
Commonly used for tumbled decorative stones, cabochons in jewelry, and ornamental carvings.
Geological facts
Jasper has been used since ancient times for seals, talismans, and decorative ornamentation by various civilizations.
Field identification & locations
Identified by its opaque yellow banding and microcrystalline texture, commonly found globally in hydrothermal veins and sedimentary deposits.
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