mineral

Yellow Jasper

Chalcedony (SiO2 with iron oxide inclusions)

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: Mustard yellow to yellow-brown; Luster: Vitreous to waxy; Structure: Cryptocrystalline; Cleavage: None; SG: 2.6-2.9

Hardness: 6
Color: Mustard yellow to yellow-brown
Luster: Vitreous to waxy

Identified June 28, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs); Color: Mustard yellow to yellow-brown; Luster: Vitreous to waxy; Structure: Cryptocrystalline; Cleavage: None; SG: 2.6-2.9

Formation & geological history

Formed via the accumulation of silica from volcanic ash or sediment, often in hydrothermal environments or sedimentary basins, where iron oxides provide the yellow hue.

Uses & applications

Used primarily for lapidary work, jewelry (cabochons), ornamental carvings, and as a healing stone in metaphysical communities.

Geological facts

Yellow Jasper was historically used as a talisman for protection. It is a dense, opaque variety of quartz that gets its color from goethite or limonite.

Field identification & locations

Identified by its opacity (unlike citrine) and waxy texture. Commonly found in riverbeds or arid regions in India, Madagascar, and the Southwestern USA.