Description
Beautiful 334g A-Grade Kambaba Jasper Sphere
This 334g A-Grade Kambaba Jasper Sphere from Madagascar is a superbly polished natural mineral specimen featuring the classic deep green and black orbicular patterns for which this stone is renowned. The photographs show the exact sphere you will receive, allowing you to appreciate its distinctive markings, colour balance, and smooth polish. The 1cm scale cube provides accurate visual size reference. As with all of our pieces, this sphere comes with a Certificate of Authenticity, confirming that it is a 100% genuine natural crystal sourced and finished with care.
Geological Background and Ancient Fossil Formation
Kambaba Jasper is one of the most intriguing ornamental stones due to its origin in fossilised stromatolites, ancient biological structures formed by cyanobacteria that lived billions of years ago. These microbial colonies thrived in shallow, mineral-rich waters, where they created layered organic mats. Over vast geological timescales, these structures were buried by sediments, compressed, and gradually transformed into stone as silica-rich waters permeated the layers.
This process of mineral replacement preserved the sweeping, circular, and cellular patterns seen today within Kambaba Jasper. These swirling orbicular formations are the mineralised remains of early life on Earth, making this stone both visually striking and scientifically important. Madagascar’s ancient geological environment, shaped by shifting tectonics, fluctuating seas, and volcanic influences, provided ideal conditions for the preservation and mineralisation of these stromatolitic structures. As a result, Madagascan Kambaba Jasper is prized worldwide for its clear patterns and deep colour saturation.
Mineral Composition and Physical Characteristics
Kambaba Jasper is composed primarily of chalcedony, a microcrystalline form of quartz. Its cryptocrystalline structure—made up of extremely small interlocking quartz crystals—gives the stone its density, fine texture, and ability to take an exceptionally high polish. This 334g sphere demonstrates these qualities beautifully, with a glossy finish that highlights the depth and contrast of its patterns.
The colour palette consists of dark, forest-like greens interwoven with nearly black orbicular clusters and swirling bands. These rounded formations, sometimes appearing cellular or concentric, are the hallmark of the fossil stromatolite structures within the jasper. The contrasts between light and dark areas create a flowing, organic appearance across the entire surface of the sphere. The stone is completely natural and untreated, showcasing its authentic geological history.
Madagascar Locality and Geological Significance
Madagascar is world-famous for producing exceptional crystal and mineral specimens, and Kambaba Jasper is among its finest exports. The regions in which it forms contain some of Earth’s oldest sedimentary deposits, shaped through billions of years of geological evolution. These environments preserved large colonies of cyanobacteria that later fossilised and mineralised into the distinctive stone known today.
Madagascan lapidary craftsmanship is well respected for its attention to detail and skill in shaping and polishing dense stones such as jasper. This ensures that spheres like this 334g specimen exhibit outstanding finish quality, colour vibrancy, and structural integrity.
Display Qualities and Collecting Appeal
This 334g sphere offers a versatile display size—substantial enough to showcase its complex patterns while remaining easy to handle and position. The spherical shape allows the eye to follow the natural flows and swirls across its surface, making it endlessly interesting to observe. Whether displayed on a shelf, desk, cabinet, or within a mineral and fossil collection, it adds both aesthetic value and geological depth to its surroundings.
Collectors appreciate Kambaba Jasper for its combination of ancient fossil origins, strong visual markings, and durability. This A-Grade specimen has been chosen for its balance of colour, clarity of orbicular formations, and polished finish, making it a standout addition for anyone who values natural geological artistry.
All of our Crystals are 100% Genuine Specimens & come with a Certificate of Authenticity.






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