mineral

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Hardness: 6.5-7.0 (Mohs scale), Color: Mustard yellow to golden brown, Luster: Dull to vitreous, Crystal Structure: Hexagonal (microcrystalline), Cleavage: None/Conchoidal fracture, Specific Gravity: 2.58-2.91

Hardness: 6

Identified February 20, 2026More mineral →

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Physical properties

Formation & geological history

Formed via the accumulation of microcrystalline quartz from hydrothermal solutions or within volcanic ash layers, often dated to various geological eras including the Paleozoic and Mesozoic

Uses & applications

Used primarily in jewelry (cabochons, beads), decorative carvings, and as a popular stone for collectors and metaphysical practices

Geological facts

The name 'Jasper' originates from the Greek word 'iaspis', meaning spotted stone. Yellow Jasper has been used since antiquity as a protective stone for travelers

Field identification & locations

Identified by its opaque appearance, hardness (it will scratch glass), and smooth water-worn surface. Commonly found in riverbeds, beaches, and desert environments worldwide, notably in India, Russia, and the USA

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