sedimentary

Red Jasper

Jasper (Silicate Mineral - SiO2)

Hardness: 6.5-7 (Mohs scale); Color: Deep rhythmic red to brownish-red; Luster: Vitreous to dull; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific gravity: 2.58-2.91

Hardness: 6
Color: Deep rhythmic red to brownish-red
Luster: Vitreous to dull

Identified April 22, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs scale); Color: Deep rhythmic red to brownish-red; Luster: Vitreous to dull; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific gravity: 2.58-2.91

Formation & geological history

Formed through the accumulation of volcanic ash or silica-rich sediments that have undergone metamorphism or chemical precipitation. The red color comes from high concentrations of iron inclusions.

Uses & applications

Commonly used in lapidary work, jewelry making (cabochons), interior decoration, and as a popular stone for crystal collecting and metaphysical purposes.

Geological facts

Jasper is an opaque variety of chalcedony. It has been used since ancient times for amulets and seals; the Bible mentions Jasper as one of the stones in the breastplate of the High Priest.

Field identification & locations

Identify in the field by its opacity (unlike translucent carnelian), its high hardness (it will scratch glass), and its distinct waxy to dull luster when unpolished. Found globally in riverbeds and desert environments.