sedimentary
Red Jasper
Silicon Dioxide (SiO2) with hematite inclusions
Hardness: 6.5-7 (Mohs); Color: deep red to reddish-brown; Luster: dull to vitreous; Crystal Structure: Trigonal (microcrystalline); Cleavage: none; Fracture: conchoidal.
- Hardness
- 6
- Color
- deep red to reddish-brown
- Luster
- dull to vitreous
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Physical properties
Hardness: 6.5-7 (Mohs); Color: deep red to reddish-brown; Luster: dull to vitreous; Crystal Structure: Trigonal (microcrystalline); Cleavage: none; Fracture: conchoidal.
Formation & geological history
Formed via the accumulation of silica around iron-rich minerals in hydrothermal or sedimentary environments. The red color comes from iron oxide (hematite).
Uses & applications
Used for jewelry (cabochons, beads), decorative lapidary work, and for metaphysical collecting.
Geological facts
Red jasper is known as a chalcedony variety. Historically, it was used by many ancient cultures for protective amulets and seals.
Field identification & locations
Identify by its characteristic red color, opacity (unlike carnelian which is translucent), and smooth conchoidal fracture. Found in the Lower Silesia region of Poland (near the provided coordinates), which is rich in agates and jaspers.
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