sedimentary
Yellow Jasper
Chalcedony (Silicon Dioxide, SiO2) with iron oxide inclusions
Hardness: 6.5-7 on Mohs scale; Color: Mustard yellow to golden brown; Luster: Vitreous to waxy; Structure: Microcrystalline; Cleavage: None; Specific Gravity: 2.58-2.91
- Hardness
- 6
- Color
- Mustard yellow to golden brown
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 on Mohs scale; Color: Mustard yellow to golden brown; Luster: Vitreous to waxy; Structure: Microcrystalline; Cleavage: None; Specific Gravity: 2.58-2.91
Formation & geological history
Formed via the accumulation of silica in hydrothermal veins or sedimentary environments, often involving filtered volcanic ash and iron impurities that provide the yellow color.
Uses & applications
Commonly used for lapidary work, jewelry (beads, cabochons), carvings, and as a popular stone for meditation or crystal healing collections.
Geological facts
Jasper was a favorite gem in the ancient world; its name can be traced back in Arabic, Persian, Hebrew, Assyrian, Greek, and Latin. Yellow Jasper is specifically associated with solar energy and endurance.
Field identification & locations
Identified by its opaque nature, yellow color, and conchoidal fracture. It is common in riverbeds and coastal areas globally, particularly in India, Russia, and the USA.
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