sedimentary
Red Jasper
Opaque microcrystalline quartz (SiO2) with iron oxide inclusions
Hardness: 6.5-7 (Mohs scale); Color: Deep brick red to maroon with grey/tan host rock; Luster: Vitreous to waxy (when polished); Structure: Cryptocrystalline; Cleavage: None (conchoidal fracture)
- Hardness
- 6
- Color
- Deep brick red to maroon with grey/tan host rock
- Luster
- Vitreous to waxy (when polished)
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Physical properties
Hardness: 6.5-7 (Mohs scale); Color: Deep brick red to maroon with grey/tan host rock; Luster: Vitreous to waxy (when polished); Structure: Cryptocrystalline; Cleavage: None (conchoidal fracture)
Formation & geological history
Forms when silica-rich fluids permeate through volcanic or sedimentary rock, often acquiring its red color from high iron content (hematite). Can be hundreds of millions of years old.
Uses & applications
Commonly used for tumbled stones, decorative beads, lapidary carvings, and as a popular grounding stone in metaphysical practices.
Geological facts
Red Jasper is known as a stone of endurance; it was historically used by warriors as a protective talisman. Its color is almost always due to the presence of Hematite.
Field identification & locations
Identified by its intense red color, high hardness (cannot be scratched by a steel knife), and opacity. Found globally with major deposits in India, Brazil, and the USA.
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