mineral

Yellow Jasper

Silicon dioxide, SiO2

Hardness: 6.5-7 on Mohs scale. Color: Mustard yellow to brownish-yellow. Luster: Vitreous to dull. Crystal structure: Cryptocrystalline. Cleavage: None. Specific gravity: 2.58-2.91

Hardness: 6
Color: Mustard yellow to brownish-yellow
Luster: Vitreous to dull

Identified July 31, 2026More mineral →

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Physical properties

Hardness: 6.5-7 on Mohs scale. Color: Mustard yellow to brownish-yellow. Luster: Vitreous to dull. Crystal structure: Cryptocrystalline. Cleavage: None. Specific gravity: 2.58-2.91

Formation & geological history

Formed through the deposition of silica-rich fluids in sedimentary or volcanic environments, often containing iron impurities that give it a yellow color.

Uses & applications

Used in carving, as tumbling rough, and in making cabochons for jewelry. Popular in metaphysical practices.

Geological facts

Jasper is an opaque variety of chalcedony. The yellow color is typically caused by goethite or iron oxide inclusions.

Field identification & locations

Identify by its opaque nature, yellow color, conchoidal fracture, and hardness (cannot be scratched by steel). Commonly found worldwide, including India, Russia, and the USA.