
sedimentary
Zebra Jasper
Jasper (variety of Quartz/Chalcedony), SiO2
Hardness (Mohs): 6.5 - 7; Color: Black and white or dark grey/cream patterns; Luster: Vitreous to waxy; Crystal Structure: Trigonal (Microcrystalline); Cleavage: None (Conchoidal fracture); Specific Gravity: 2.6 - 2.9
- Color
- Black and white or dark grey/cream patterns
- Luster
- Vitreous to waxy
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Physical properties
Hardness (Mohs): 6.5 - 7; Color: Black and white or dark grey/cream patterns; Luster: Vitreous to waxy; Crystal Structure: Trigonal (Microcrystalline); Cleavage: None (Conchoidal fracture); Specific Gravity: 2.6 - 2.9
Formation & geological history
Formed from silica-rich sedimentary deposits or volcanic ash where mineral impurities (such as manganese or iron oxides) create distinct banding or mottling over millions of years through metamorphism or hydrothermal activity.
Uses & applications
Primarily used for ornamental purposes, including beads, cabochons for jewelry, decorative carvings, and as a popular stone for tumbling and crystal healing practices.
Geological facts
Despite the name 'Jasper', many zebra stones are technically a combination of minerals including quartz, basalt, and sometimes calcium carbonate. It is often referred to as a 'nurturing stone' in metaphysical communities.
Field identification & locations
Identify in the field by its distinct high-contrast black and white stripes or splotches and its inability to be scratched by a steel knife. It is commonly found in India, Russia, Africa, and Brazil.
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