sedimentary
Tumbled Red Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
Hardness: 6.5-7 on the Mohs scale. Color: Rich reddish-brown. Luster: Vitreous to dull. Crystal structure: Trigonal (microcrystalline/cryptocrystalline). Cleavage: None, exhibits conchoidal fracture. Specific gravity: 2.58-2.91.
- Hardness
- 6
- Color
- Rich reddish-brown
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6.5-7 on the Mohs scale. Color: Rich reddish-brown. Luster: Vitreous to dull. Crystal structure: Trigonal (microcrystalline/cryptocrystalline). Cleavage: None, exhibits conchoidal fracture. Specific gravity: 2.58-2.91.
Formation & geological history
Formed from silica-rich solutions in sedimentary environments or volcanic ash beds, often accumulating in nodules or filling fractures over millions of years.
Uses & applications
Used widely in lapidary arts, tumbled stones, ornamental carvings, jewelry making, and metaphysical collection.
Geological facts
Jasper has been prized since ancient times as a sacred and protective stone, used by ancient civilizations for talismans, seals, and weaponry.
Field identification & locations
Easily identifiable by its opaque red-brown coloration, smooth waxy or vitreous polish, and conchoidal fracture. Commonly found worldwide, particularly in India, Brazil, Russia, and the United States.
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