mineral
Red Jasper
Silicon Dioxide with Hematite impurities (SiO2 + Fe2O3)
Hardness: 6.5-7 on Mohs scale; Color: Brick red to brownish red; Luster: Dull to vitreous; Crystal Structure: Microcrystalline/Trigonal; Cleavage: None; Specific Gravity: 2.58-2.91
- Hardness
- 6
- Color
- Brick red to brownish red
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6.5-7 on Mohs scale; Color: Brick red to brownish red; Luster: Dull to vitreous; Crystal Structure: Microcrystalline/Trigonal; Cleavage: None; Specific Gravity: 2.58-2.91
Formation & geological history
Formed when silica-rich fluids permeate through volcanic or sedimentary rock, often acquiring its red color from iron oxide (hematite) inclusions during the solidification process.
Uses & applications
Commonly used in jewelry for cabochons and beads, as an ornamental stone in scuptures, and in lapidary arts. Also valued in holistic practices.
Geological facts
Red Jasper is known as a 'stone of endurance' and has been used since ancient times in amulets and cylinders for official seals in Mesopotamia.
Field identification & locations
Identify by its deep red color, opaque transparency, and smooth, waxy feel when polished. Commonly found in riverbeds or coastal areas as water-worn pebbles.
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Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral
Nephrite Jade
Nephrite
Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock