mineral

Red Jasper

Silicon dioxide (SiO2) with Iron inclusions

Hardness: 6.5-7 (Mohs scale); Color: Brick red to deep terracotta; Luster: Vitreous when polished; Crystal structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific gravity: 2.58-2.91

Hardness: 6
Color: Brick red to deep terracotta
Luster: Vitreous when polished

Identified July 1, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the deposition of silica from hydrothermal solutions or within volcanic and sedimentary rocks. Its red color is derived from high iron content (hematite inclusions).

Uses & applications

Used primarily in lapidary arts for jewelry, beads, polished cabochons, and decorative ornamental carvings. Also valued in holistic practices and stone collecting.

Geological facts

Red Jasper has been used by ancient civilizations for thousands of years; it was known as the 'rain-bringer' in Native American cultures and was featured on the High Priest\'s breastplate in biblical history.

Field identification & locations

Identify by its opaque red color and high hardness (it will scratch glass). Often found in riverbeds or mountain regions globally, especially in India, Brazil, and the USA.

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sedimentary

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Gypsum (variety Selenite or Alabaster)

Calcium sulfate dihydrate (CaSO4·2H2O)

Mineral

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Nephrite

Mineral/Rock

Granite

Granite (Phaneritic intrusive igneous rock)

igneous