gemstone
Impression Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7, vitreous to dull luster, and opaque with distinct multicolored matrix patterns.
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Physical properties
Mohs hardness of 6.5 to 7, vitreous to dull luster, and opaque with distinct multicolored matrix patterns.
Formation & geological history
Formed from silica-rich solutions precipitating in sedimentary environments or volcanic ash beds over millions of years.
Uses & applications
Primarily used for making polished beads, cabochons, and ornamental jewelry.
Geological facts
Often enhanced with dyes or stabilized to accentuate its swirling, sea-like patterns, though natural variants exist.
Field identification & locations
Identified by its waxy luster, conchoidal fracture, and colorful matrix; commonly sourced from China, India, and Africa.
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