sedimentary

Jasper (specifically Bloodstone or Heliotrope variety)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

AI-generated identification · may be incorrect

Hardness: 6.5-7 Mohs; Color: Teal-green matrix with red to brownish-red inclusions; Luster: Vitreous to waxy; Structure: Hexagonal (cryptocrystalline); Cleavage: None; SG: 2.6-2.9

Hardness: 6
Color: Teal-green matrix with red to brownish-red inclusions
Luster: Vitreous to waxy

Identified June 8, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 Mohs; Color: Teal-green matrix with red to brownish-red inclusions; Luster: Vitreous to waxy; Structure: Hexagonal (cryptocrystalline); Cleavage: None; SG: 2.6-2.9

Formation & geological history

Formed when silica-rich hydrothermal fluids or groundwater circulate through volcanic ash or sediment, carrying iron oxides that create the distinct red and green patterns. It is found in igneous environments and derived sedimentary deposits.

Uses & applications

Used primarily as a gemstone for jewelry (cabochons, beads), decorative carvings, and as a popular specimen for rock tumbling and metaphysical collectors.

Geological facts

In folklore, the red spots were believed to be drops of blood. It was historically used by ancient Babylonians to make seals and amulets to ward off enemies.

Field identification & locations

Identify by its waxy luster, smooth conchoidal fracture, and inability to be scratched by a steel knife. Common in the western United States, India, and Australia in riverbeds and desert washes.