sedimentary
Calligraphy Stone
Fossiliferous Limestone (containing Hematite and Shells)
Hardness: 3-4 (Mohs); Color: Golden yellow, tan, or orange patterns on a chocolate brown matrix; Luster: Dull to waxy; Structure: Finely crystalline to fossiliferous; Cleavage: None.
- Hardness
- 3-4 (Mohs)
- Luster
- Dull to waxy
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Physical properties
Hardness: 3-4 (Mohs); Color: Golden yellow, tan, or orange patterns on a chocolate brown matrix; Luster: Dull to waxy; Structure: Finely crystalline to fossiliferous; Cleavage: None.
Formation & geological history
Formed in an ancient sea bed where shells and organic debris were compressed with iron-rich minerals (hematite) over millions of years, typically during the Cretaceous period.
Uses & applications
Primarily used for lapidary work including cabochons, beads, carvings, and metaphysical collecting.
Geological facts
Also known as Elephant Skin Jasper, Mariam Stone, or Arabic Stone. The 'calligraphy' refers to the intricate, script-like patterns formed by petrified shells and fossils.
Field identification & locations
Identified by its distinctive script-like yellow patterns on a dark brown background. Commonly found in the Himalayan mountains of India and parts of Africa.
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