Description
Red Jasper – Large Natural Mineral Specimen from Madagascar (Approx. 1.5kg, 100–175mm)
This Red Jasper specimen from Madagascar is a genuine natural mineral piece, carefully selected for its rich red colour, solid weight, and impressive display presence. Averaging approximately 1.5kg and measuring around 100–175mm (full sizing please see photo), each piece is carefully chosen. The photograph provided shows an example of the actual specimen you will receive. Every item includes a Certificate of Authenticity lifetime guarantee generic card, confirming it as a genuine mineral specimen.
Mineral Type & Geological Classification
Red Jasper is a variety of jasper, an opaque, microcrystalline form of quartz composed primarily of silicon dioxide:
SiO₂
Jasper belongs to the chalcedony family within the quartz group and crystallises in the trigonal crystal system at the microscopic level. Unlike transparent quartz crystals, jasper forms as dense, fine-grained masses of interlocking silica crystals, resulting in its opaque structure and smooth fracture surfaces.
Red jasper has a hardness of 6.5–7 on the Mohs scale, making it durable and suitable for long-term display.
Colour, Texture & Natural Features
This large Madagascan red jasper specimen may display:
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Deep brick-red to earthy crimson tones
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Subtle brown or ochre variations
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Opaque body colour
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Smooth natural surfaces or lightly polished areas
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Occasional banding or mottled patterns
The red colouration is caused primarily by iron oxide inclusions within the silica structure. These mineral impurities create the strong, consistent red tones that make this stone visually striking.
Due to its substantial size and weight, this specimen offers excellent visual impact for collectors and display settings.
Geological Formation & Madagascar Locality
Red jasper forms in sedimentary and volcanic environments where silica-rich fluids solidify and incorporate iron minerals during deposition. Over time, compaction and mineralisation transform silica sediments into dense jasper.
Madagascar is internationally recognised for producing high-quality ornamental stones and jasper varieties. The island’s complex geological history, including volcanic activity and sedimentary basin development, provides ideal conditions for jasper formation.
Associated minerals in jasper-bearing deposits may include quartz, chalcedony, iron oxides, and other silica-rich materials.
The dense microcrystalline structure of jasper makes it resistant to weathering, allowing large, solid specimens such as this to remain intact over geological timescales.
Size, Weight & Display Appeal
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Mineral: Red Jasper (Microcrystalline Quartz – SiO₂)
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Crystal System: Trigonal (microcrystalline structure)
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Origin: Madagascar
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Weight: Approximately 1.5kg average
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Size: Approximately 100–175mm (please refer to photo for full sizing reference)
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Authenticity: Includes Certificate of Authenticity lifetime guarantee generic card
The generous size and weight make this specimen ideal as a statement display piece for shelves, cabinets, offices, or curated mineral collections. Its bold red colour stands out strongly against neutral backgrounds.
Collecting & Traditional Associations
Jasper has been valued throughout history as a durable ornamental stone and decorative material. Large specimens are especially appreciated by collectors for their strong colour presence and solid form.
In spiritual traditions, red jasper is traditionally associated with strength and vitality; these interpretations are cultural rather than scientific. From a mineralogical perspective, its appeal lies in its iron-rich silica composition, sedimentary and volcanic origins, and substantial display size.
A genuine large Red Jasper specimen from Madagascar, carefully chosen for quality and supplied with certificate of authenticity, offering bold natural colour and impressive weight for collectors and natural mineral displays.
