mineral

Red Jasper

Jasper (Silicon Dioxide, SiO2 with iron oxide impurities)

Hardness: 6.5–7 on the Mohs scale. Color: Brick-red to deep terracotta. Luster: Dull to waxy. Crystal structure: Microcrystalline/Cryptocrystalline (Trigonal). Cleavage: None (conchoidal fracture). Specific Gravity: 2.58–2.91.

Hardness: 6
Color: Brick-red to deep terracotta
Luster: Dull to waxy

Identified March 22, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the deposition of silica from water or hydrothermal fluids into cracks or volcanic cavities. Its red color is derived from high iron oxide (hematite) inclusions. Can be found in geological formations ranging from the Precambrian to the Cenozoic eras.

Uses & applications

Used primarily in lapidary arts for jewelry (beads, cabochons), ornamental carvings, and as a popular pocket stone for collectors. Historically used for seals and amulets.

Geological facts

Jasper has been used by ancient civilizations for thousands of years; it was mentioned in the Bible and was highly valued in ancient Greek and Egyptian cultures. It is often referred to as the 'Supreme Nurturer' in metaphysical circles.

Field identification & locations

Identify in the field by its opaque nature (unlike translucent carnelian), its red streak on a streak plate, and its inability to be scratched by a steel knife. It is common in riverbeds and desert environments in the USA (Southwest), India, Brazil, and Russia.

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