
metamorphic
Zebra Jasper
Silicon Dioxide (SiO2) with iron oxide and manganese inclusions
Hardness: 6.5-7 (Mohs scale); Color: White or cream with dark brown/black banding; Luster: Vitreous to waxy; Structure: Microcrystalline; Cleavage: None; Specific Gravity: 2.6-2.9
- Hardness
- 6
- Color
- White or cream with dark brown/black banding
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 (Mohs scale); Color: White or cream with dark brown/black banding; Luster: Vitreous to waxy; Structure: Microcrystalline; Cleavage: None; Specific Gravity: 2.6-2.9
Formation & geological history
Formed from the petrification of sandy or clay-rich sediments subjected to heat and pressure (metamorphism). The banding is caused by the rhythmic deposition of mineral-rich fluids during formation. Often associated with Precambrian to Paleozoic ages.
Uses & applications
Primarily used for lapidary work including cabochons, beads, and tumbled stones. Also used in decor, spiritual practices/metaphysical healing, and as an ornamental stone in landscaping.
Geological facts
Despite being called 'Jasper', most Zebra Jasper is actually a form of metamorphosed calcium carbonate or siltstone. It is famously known as the 'Stone of Balance' because its appearance reflects the dualities of life.
Field identification & locations
Identify in the field by its distinct high-contrast striped patterns and lack of light transmission (it is opaque). Commonly found in Australia, Russia, Brazil, and India. Collectors should look for sharp, well-defined contrast between the colors.
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