Gemstone profile and identification guide
Kambaba Jasper
Kambaba jasper is a trade-name ornamental rock with green-black orbicular patterns, not a strict jasper species term.
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Overview
Kambaba jasper is a trade-name ornamental rock with green-black orbicular patterns, not a strict jasper species term.
Did you know? Despite the name, this material is commonly treated as a decorative rock category in trade.
Use this profile as a collector reference and educational guide for quick on-page comparison, then validate with the interactive identification system.
Identification
Name: Kambaba Jasper
Scientific classification: Ornamental Metamorphic Rock Trade Material
Hardness: 6.5 Mohs
Transparency: opaque
Lustre: waxy
Crystal system: Composite aggregate
Primary colour: Dark Green
Secondary colour: Black
Colour family: Greens
Characteristic green-black orbicular patterning is primary field identifier.
Verification Status
Status: verified-core-fields
Reference priority: GIA, Gem-A, Mindat, International Gem Society
Core identity, locality, and physical-property fields reviewed against standard gemological references.
Trade-name entries include conservative composition/treatment disclosures where needed.
Physical Properties
Hardness category: hard
Hardness value: 6.5 Mohs
Chemical composition: Composite dark green-black rock (often interpreted as stromatolitic/fossil-like algal structure with silica-rich matrix)
Crystal system: Composite aggregate
Common locations: Madagascar, South Africa
Learn more: Gem-A gemstone education resources.
Colour Variations
Dark green-black stone with orbicular and swirling patterns sold as kambaba jasper.
Optical effects: Orbicular Patterning
Detailed Gemology
Mineral species: Composite ornamental rock trade material
Mineral group: Patterned rock trade category
Chemical formula: Composite dark green-black rock (often interpreted as stromatolitic/fossil-like algal structure with silica-rich matrix)
Mohs hardness: 6.5
Crystal system: Composite aggregate
Lustre: waxy
Transparency: opaque
Streak: White to pale
Cleavage: Variable by component
Fracture: Uneven
Specific gravity: 2.6-2.8 (variable)
Refractive index: Variable by component
Optical phenomena: Orbicular patterning
Colour range: Dark green and black with circular motifs
Common inclusions: Matrix swirls, fossil-like structures, mineral specks
Geological environment: Ancient metamorphosed sedimentary/biogenic rock contexts
Principal mining regions: Madagascar, South Africa
Important commercial sources: Kambaba jasper is a trade name for patterned ornamental rock, commonly sourced from Madagascar
Historical significance: Popular modern ornamental trade stone.
Common treatments: Stabilization and dye enhancement may occur.
Synthetic or imitation forms: Printed/resin composites imitate patterns.
Common look-alikes: Orbicular jaspers, patterned rhyolites
Jewellery uses: Kambaba Jasper is used chiefly for Pattern-driven jewellery and ornamental carving.. In the trade it is commonly fashioned as cabochons, beads, carvings, and polished ornamental pieces, with Mohs hardness 6.5 guiding suitable jewellery applications.
Care recommendations: Durable for cabochons and beads; avoid hard impact on thin carvings.
Cross-check profile data with GIA Gem Encyclopedia and Mindat entry for Kambaba Jasper.
Formation
Forms as patterned composite rock with ancient sedimentary/biogenic textures and silica-rich recrystallization.
Origin
Kambaba jasper is a trade name for patterned ornamental rock, commonly sourced from Madagascar
Uses
Best for: Kambaba Jasper is used chiefly for Pattern-driven jewellery and ornamental carving.. In the trade it is commonly fashioned as cabochons, beads, carvings, and polished ornamental pieces, with Mohs hardness 6.5 guiding suitable jewellery applications.
Ideal uses: Pattern-driven jewelry and ornamental carving.
Care
Durable for cabochons and beads; avoid hard impact on thin carvings.
Need another candidate? Use advanced gemstone search or return to the identification guide.
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Kambaba Jasper FAQ
How can I identify Kambaba Jasper?
Compare hardness (6.5 Mohs), crystal system (Composite aggregate), colour profile, and lustre (waxy) with your sample. Then cross-check related gemstones listed above.
What colour range does Kambaba Jasper appear in?
Dark green-black stone with orbicular and swirling patterns sold as kambaba jasper.
Where is Kambaba Jasper commonly used?
Pattern-driven jewelry and ornamental carving.. For maintenance, follow the care guidance in this profile.
Scientific References
GIA: general gemstone identity (reviewed) - Batch 06 factual verification pass.
Gem-A: gemological terminology and testing references (reviewed) - Batch 06 factual verification pass.
Mindat: mineral species and principal localities (reviewed) - Batch 06 factual verification pass.
International Gem Society: gem trade context and treatment overview (reviewed) - Batch 06 factual verification pass.