sedimentary
Calligraphy Stone
Mariam Jasper (Fossiliferous Limestone composed of Hematite and Shell remains)
Hardness: 6.5-7.0 (Mohs scale); Color: Yellow-gold patterns on a brownish-red or earthy background; Luster: Dull to sub-vitreous; Structure: Cryptocrystalline; Cleavage: None
- Hardness
- 6
- Color
- Yellow-gold patterns on a brownish-red or earthy background
- Luster
- Dull to sub-vitreous
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Physical properties
Hardness: 6.5-7.0 (Mohs scale); Color: Yellow-gold patterns on a brownish-red or earthy background; Luster: Dull to sub-vitreous; Structure: Cryptocrystalline; Cleavage: None
Formation & geological history
Formed in the Himalayan Mountains from fossilized bone, shells, and swamp plants pressurized with hematite and iron over millions of years (Eocene period).
Uses & applications
Primarily used for ornamental carvings (like the animal figurine shown), meditation stones, jewellery cabochons, and decorative interior pieces.
Geological facts
Also known as Cobra Jasper or Mariam Stone, the patterns are actually fossilized remains of ancient aquatic life, giving the appearance of Arabic calligraphy.
Field identification & locations
Identify by its unique 'script' patterns and high hematite content which makes it denser than many jaspers. Commonly sourced from the Himalayan region of India.
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