Calligraphy Stone (also known as Elephant Skin Jasper or Mariam Stone)
Fossiliferous Sedimentary Rock (composed of Shell Hash and Iron Oxide) · Decorative Stone / Collector Mineral / Semi-Precious Gemstone
Crystal System
Amorphous / Microcrystalline; occurs in massive sedimentary beds with no visible external crystal form
Mineral Group
Carbonates and Silicates (mixture of fossilized shells and jasperized hematite)
Chemical Formula
Primarily CaCO3 (Calcite/Aragonite) with SiO2 (Quartz/Jasper) and Fe2O3 (Hematite/Goethite)
Formation Process
Sedimentary; formed from the accumulation of bone, shell, and vegetation remains in a marine environment that were petrified and compressed over millions of years
About This Crystal
An opaque, earthy stone characterized by a yellowish-mustard or tan background with intricate, dark brown swirling patterns resembling calligraphy or script. It has a dull to waxy luster and a smooth, dense texture.
Physical Characteristics
Color: Mustard yellow to tan with brown/ochre swirls; Streak: Pale brown or white; Cleavage: None; Fracture: Conchoidal to uneven; Specific Gravity: 2.6 - 2.8; Fluorescence: Usually none
Optical Properties
Opaque; Non-refractive (Aggregate). It does not exhibit pleochroism or dispersion due to its opaque, polycrystalline nature.
Hardness & Durability
Origin Region
Primarily sourced from the Himalayan Mountains in India; found in ancient sedimentary seabeds
Hardness & Durability
Mohs Hardness: 6.5 to 7.0; Toughness: High; Excellent durability for carvings and jewelry but can be sensitive to strong acids due to carbonate content.
Care & Maintenance
Clean with warm soapy water and a soft cloth; avoid ultrasonic cleaners and harsh chemical solvents. Store away from harder gems like Topaz or Sapphire to prevent scratches.
Rarity & Value
Common; Value is determined by the complexity of the 'script' patterns and the quality of the polish. Generally an affordable decorative stone.
Special Characteristics
Natural pseudo-fossil appearance; the 'calligraphy' marks are actually sections of fossilized marine life (shells/mollusks) and iron-rich mineral inclusions.
Lore & History
Historically used in India for talismans; traditionally associated with the Solar Plexus and Third Eye chakras. It is believed in lore to aid in accessing Akashic records and staying grounded during transitions.