Cobra Jasper
Silicon dioxide (SiO2), variety of chalcedony/microcrystalline quartz
A banded jasper with cream, tan, and brown layers resembling snakeskin, often sourced from Madagascar.
- Mohs hardness
- 6.5-7
- Color
- Cream, tan, brown, and gray with banded snakeskin-like patterns
- Type
- mineral
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Overview
Cobra Jasper is a banded variety of jasper whose layered cream, tan, brown, and gray patterns resemble the scales and markings of a cobra's skin. It is an opaque microcrystalline quartz (chalcedony) often associated with Madagascar deposits.
The rhythmic, wavy banding and earthy tones give it an organic, reptilian appearance that makes it popular for cabochons and beads. Each piece shows a distinct flowing pattern.
It is sometimes related to or sold alongside other banded Malagasy jaspers and ocean-jasper-type material, and it polishes to a smooth, attractive finish.
Formation & geology
Cobra Jasper forms when silica-rich solutions precipitate as microcrystalline quartz in layers within volcanic or sedimentary host rock. Rhythmic deposition and variations in iron and other trace minerals create the wavy, banded patterns that resemble snakeskin.
Successive layers of slightly different mineral content harden into a dense, opaque stone, preserving the flowing band structure.
Much of the material on the market is reported from Madagascar, a prolific source of banded and ocean-type jaspers, though similar banded jaspers occur elsewhere.
How to identify it
Identify Cobra Jasper by its wavy, layered cream-tan-brown banding that resembles snakeskin on an opaque body. It is hard (6.5-7), scratches glass, resists a steel knife, and shows a white streak with a waxy-to-glassy polish; it does not fizz in acid.
Its flowing, reptilian banding distinguishes it from zebra jasper (more straight stripes) and from orbicular jaspers (rounded spots). It can resemble some banded Madagascar jaspers; the snakeskin-like wavy bands are the key visual clue.
Be aware that snakeskin-pattern trade names are used loosely, so pattern, hardness, and acid-inertness confirm it as a true jasper.
Uses & significance
Cobra Jasper is used for cabochons, beads, pendants, and tumbled stones, valued for its distinctive snakeskin banding. Its hardness makes it durable enough for rings and everyday jewelry.
Lapidaries seek pieces with crisp, well-defined banding and pleasing earth tones for striking cabochons.
Metaphysically it is associated with transformation, grounding, and renewal, drawing on snake symbolism of shedding and rebirth; enthusiasts regard it as a stabilizing stone. These are spiritual beliefs, not scientific facts.
Frequently asked questions
Where does Cobra Jasper come from?
Much of the material is reported from Madagascar, a major source of banded jaspers, though similar stones occur elsewhere.
Why is it called Cobra Jasper?
Its wavy, layered cream-tan-brown banding resembles the scales and markings of a cobra's skin.
How is Cobra Jasper different from zebra jasper?
Cobra jasper has flowing, wavy snakeskin-like bands, while zebra jasper shows straighter, more regular stripes.
Is Cobra Jasper durable for jewelry?
Yes. At Mohs 6.5-7 it is durable enough for rings, pendants, and beads.
Cobra Jasper guides
In-depth guides for identifying, valuing, and understanding Cobra Jasper.
