sedimentary
Script Jasper
Cryptocrystalline Quartz (SiO2) with fossiliferous inclusions
Hardness: 6.5-7 (Mohs). Color: Golden yellow, tan, or orange with dark reddish-brown accents. Luster: Dull to waxy. Structure: Microcrystalline. Cleavage: None (conchoidal fracture). Specific Gravity: 2.58-2.91.
- Hardness
- 6
- Luster
- Dull to waxy
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Physical properties
Hardness: 6.5-7 (Mohs). Color: Golden yellow, tan, or orange with dark reddish-brown accents. Luster: Dull to waxy. Structure: Microcrystalline. Cleavage: None (conchoidal fracture). Specific Gravity: 2.58-2.91.
Formation & geological history
Formed through the fossilization of ancient marine organisms (crustaceans and microorganisms) whose shells were replaced by silica over millions of years, often in an iron-rich clay matrix. Most specimens date back to the Cretaceous or Jurassic periods.
Uses & applications
Primarily used for lapidary work, jewelry (cabs, beads), carved ornaments, and as a decorative collector's stone. It is also popular in metaphysical practices.
Geological facts
Also known as Elephant Skin Jasper, Miriam Stone, or Calligraphy Stone. The 'script' patterns are actually the preserved fossilized remains of ancient shell fragments and bone pieces.
Field identification & locations
Identify by its unique 'cuneiform' or calligraphic markings and intense hardness (cannot be scratched by a steel knife). Commonly found in the Himalayan mountains of India and parts of Africa.
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