Maligano Jasper Identification Guide
Identifying Maligano jasper from Indonesia by its brecciated web-like patterns, earthy color palette, and quartz-family hardness.
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What Maligano Jasper Looks Like
Maligano jasper is a brecciated chalcedony/microcrystalline quartz from Indonesia. Its signature is a fractured, web-like or stained-glass appearance, where angular fragments are cemented by veins of contrasting silica. Colors run earthy and varied: cream, beige, gray, tan, brown, red, purple, and occasional bluish or lavender zones.
- Color: multicolored - browns, grays, reds, purples, cream, with web-like veining
- Luster: waxy to dull; glassy on polished surfaces
- Transparency: opaque (occasionally translucent in thin chalcedony veins)
- Texture/form: brecciated, with angular clasts and net-like seams
Step-by-Step Field ID Checklist
- Confirm it is jasper/chalcedony: opaque, fine-grained, with a waxy feel and conchoidal fracture.
- Look for the breccia pattern - angular broken fragments rejoined by lighter or contrasting silica veins is the defining trait.
- Test hardness - it scratches glass and steel (Mohs ~6.5-7).
- Check the streak - white.
- Inspect a polished face for the characteristic "cracked mosaic" or webbed look.
Key Diagnostic Tests
- Mohs hardness: 6.5-7 (quartz family); will not be scratched by a steel knife.
- Streak: white.
- Cleavage/fracture: no cleavage; conchoidal to splintery fracture.
- Acid: no reaction (it is silica, not carbonate), separating it from veined marbles.
- Specific gravity: about 2.6, typical of quartz.
Common Look-Alikes and How to Tell Them Apart
- Brecciated jasper (generic): Maligano is a specific brecciated jasper; the distinction is locality and its fine, intricate net veining rather than any property difference.
- Brecciated agate: agate shows translucent banding; Maligano is mostly opaque jasper with denser web patterns.
- Ruin or breccia marble: marble fizzes in acid and is much softer (Mohs 3); Maligano will not react and is far harder.
- Picture/Picasso jasper: these show flowing or landscape patterns rather than the angular fractured-mosaic look of Maligano.
Where It Is Typically Found
Maligano jasper is mined near the village of Maligano on Muna Island and the Sulawesi region of Indonesia, where it forms in silica-rich, tectonically fractured host rock.
Frequently asked questions
How can you tell if it's real Maligano jasper?
Look for the distinctive brecciated web pattern of angular fragments joined by contrasting silica veins, confirm quartz-family hardness (scratches glass, Mohs ~6.5-7), a white streak, and no reaction to acid.
What does Maligano jasper look like?
It is an opaque, brecciated jasper with a stained-glass or cracked-mosaic appearance in earthy browns, grays, reds, purples, and cream tones, often with fine net-like veining between fragments.
Where does Maligano jasper come from?
It is mined in Indonesia, around the village of Maligano on Muna Island in the Sulawesi region.
Maligano jasper vs brecciated agate: what is the difference?
Both show fractured-and-rehealed patterns, but agate is translucent with banding, while Maligano is a mostly opaque jasper with denser, more intricate webbed veining.