sedimentary
Zebra Jasper
Silicon Dioxide (SiO2) - Macro-crystalline Quartz/Chert with impurities
Hardness: 6.5-7 (Mohs scale); Color: Black, dark gray, and white banded patterns; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific Gravity: 2.6-2.9
- Hardness
- 6
- Color
- Black, dark gray, and white banded patterns
- Luster
- Vitreous to waxy
Identified More sedimentary →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6.5-7 (Mohs scale); Color: Black, dark gray, and white banded patterns; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific Gravity: 2.6-2.9
Formation & geological history
Formed from sedimentary processes where silica-rich fluids permeate through sedimentary deposits or volcanic ash. The distinctive banding occurs as different mineral impurities (like manganese, carbon, or iron) settle in distinct layers over millions of years. This specimen likely originates from the Precambrian or Paleozoic eras.
Uses & applications
Used primarily in lapidary arts, jewelry (cabochons, beads), and decorative interior design. It is popular for ornamental carvings, worry stones, and as a collector's specimen for those interested in banded patterns.
Geological facts
Despite Being called 'Jasper', it is often more geologically similar to a patterned marble or a banded chert. In the metaphysical community, it is often referred to as the 'Anti-Apathy Stone', though geologically its fame comes from its high-contrast aesthetic which mimics a zebra's coat.
Field identification & locations
Identify in the field by its high-contrast black and white stripes and its ability to scratch glass (hardness test). It is most commonly found in deposits in Australia, Brazil, Russia, and the United States (specifically Utah). Collectors look for sharp, distinct color transitions without muddying between the white and black layers.
More like this
Other sedimentary specimens
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Shale or Slaty Mudstone
Argillaceous sedimentary rock
sedimentary
Chert Breccia
Brecciated Chert (Microcrystalline Silica)
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2)
sedimentary
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
sedimentary