mineral

Yellow Jasper

Silicon Dioxide with iron inclusions (SiO2)

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

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

Identified March 26, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the deposition of silica from hydrothermal solutions or volcanic ash in sedimentary environments; the yellow hue is primarily due to the presence of goethite or other iron oxides. It can range from hundreds of millions to billions of years old.

Uses & applications

Predominantly used for lapidary work, cabochons, beads for jewelry, ornamental carvings, and as a popular stone for chakra healing and crystal collecting.

Geological facts

Jasper is an opaque variety of chalcedony. Historically, it was known as a stone of protection and was often used in the amulets of ancient Egyptian priests to safeguard against dark magic.

Field identification & locations

Identify by its complete opacity (unlike citrine which is transparent), waxy feel when polished, and lack of visible crystalline structure. Common locations include India, South Africa, Brazil, and the USA. Collectors look for uniform color and absence of fractures.

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