mineral
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 brownish-yellow color, waxy to vitreous luster, and a trigonal crystal system with cryptocrystalline structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque yellow to brownish-yellow color, waxy to vitreous luster, and a trigonal crystal system with cryptocrystalline structure.
Formation & geological history
Formed through the hydrothermal deposition of silica-rich fluids or chemical precipitation within sedimentary and volcanic rocks over millions of years.
Uses & applications
Commonly used in cabochons, beads, decorative carvings, and as a popular collectible gemstone.
Geological facts
Jasper has been used since ancient times for talismans and seals. It is an opaque variety of chalcedony.
Field identification & locations
Identified by its conchoidal fracture, lack of cleavage, and high hardness that scratches glass. Found worldwide in regions with volcanic activity and ancient riverbeds.
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