sedimentary

Calligraphy Stone

Fossiliferous Stromatolite Limestone (also known as Arabic Script Stone, Miriam Stone, or Elephant Skin Jasper)

AI-generated identification · may be incorrect

Hardness: 3-4 on the Mohs scale. Color: Tan, beige, cream matrix with dark brown to black dendritic inclusions, fossil fragments, and iron oxide staining. Luster: Vitreous to dull. Crystal structure: Microcrystalline/cryptocrystalline calcite matrix. Cleavage: Perfect rhombohedral in calcite. Specific gravity: 2.6-2.8.

Hardness: 3-4 on the Mohs scale
Luster: Vitreous to dull

Identified August 7, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed from ancient fossilized marine microorganisms, specifically stromatolites and skeletal fragments, embedded in carbonate mud which underwent lithification and later iron/manganese oxide infiltration during the Jurassic period.

Uses & applications

Primarily used as a decorative lapidary material, cut and polished into cabochons for jewelry, spheres, worry stones, and ornamental display pieces.

Geological facts

The distinctive dark patterns strongly resemble ancient Arabic calligraphy or hieroglyphs, which gives the stone its commercial names. It is heavily mined in the Himalayan foothills of India.

Field identification & locations

Easily identified by its characteristic cream/beige background contrasting sharply with dark, intricate dendritic patterns resembling script. Found primarily in India. Collectors look for high-contrast script-like patterns.