sedimentary
Polished Jasper (Mushroom Carving)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Hardness: 6.5-7 Mohs; Color: Tan, brown, and pinkish hues; Luster: Vitreous to waxy (when polished); Structure: Cryptocrystalline; Specific Gravity: 2.6-2.9.
- Hardness
- 6
- Color
- Tan, brown, and pinkish hues
- Luster
- Vitreous to waxy (when polished)
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Physical properties
Hardness: 6.5-7 Mohs; Color: Tan, brown, and pinkish hues; Luster: Vitreous to waxy (when polished); Structure: Cryptocrystalline; Specific Gravity: 2.6-2.9.
Formation & geological history
Formed through the deposition of silica from water solutions or volcanic ash into gaps in rocks, often occurring in volcanic regions or alongside sedimentary beds over millions of years.
Uses & applications
Primarily used as decorative carvings, pocket stones, worry stones, jewelry, and for metaphysical collections.
Geological facts
Jasper is a variety of chalcedony that contains up to 20 percent foreign materials, which determines its color and opacity. Mushroom shapes are popular in modern lapidary for 'cottagecore' aesthetics.
Field identification & locations
Identify by its opacity (jasper will not let light through even at edges) and smooth, hard surface that cannot be scratched by a steel knife. Found globally, especially in India, Brazil, and the USA.
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