Yellow Jasper

Physical Properties

Hardness: 6.5-7 (Mohs); Color: Mustard yellow, golden brown; Luster: Vitreous to waxy; Crystal Structure: Hexagonal (microcrystalline); Cleavage: None; Specific Gravity: 2.6-2.9

Formation & Geological History

Formed from the deposition of silica-rich fluids in sedimentary or volcanic environments. Its yellow color is derived from iron (goethite) inclusions during the solidification process.

Uses & Applications

Used primarily for lapidary arts, jewelry making (cabochons and beads), decorative ornaments, and as a popular stone in crystal healing practices.

Geological Facts

Jasper is an opaque variety of chalcedony. Historically, it was known as a 'nurturing stone' and was often used in ancient amulets for protection and strength.

Field Identification & Locations

Identify by its opacity (even on thin edges), smooth waxy feel when polished, and lack of visible crystalline grain. Commonly found in riverbeds or coastal deposits globally.

Identified on: 4/15/2026

Mode: Standard