mineral

Yellow Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale); Color: Mustard yellow, golden brown; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.58-2.91

Hardness: 6
Color: Mustard yellow, golden brown
Luster: Vitreous to waxy

Identified July 10, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs scale); Color: Mustard yellow, golden brown; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.58-2.91

Formation & geological history

Formed from silica-rich hydrothermal fluids or through the silicification of volcanic ash or sediments. The yellow color is caused by the presence of Goethite or Limonite (iron oxide) inclusions during formation.

Uses & applications

Commonly used for lapidary work, jewelry (beads, cabochons), tumbled stones for crystal healing, and as an ornamental stone in polished form.

Geological facts

Jasper is a variety of chalcedony that is opaque due to its high mineral content (up to 20% foreign material). Traditionally known as 'the supreme nurturer' in metaphysical circles.

Field identification & locations

Identify by its opacity (unlike translucent agate) and its smooth, waxy texture when polished. Found globally, with significant deposits in India, Brazil, Australia, and the western United States.