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
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Physical properties
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
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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