gemstone
Fire Agate
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, amorphous or cryptocrystalline structure, and displays conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, amorphous or cryptocrystalline structure, and displays conchoidal fracture.
Formation & geological history
Formed in hot spring cavities within volcanic rock through the deposition of silica-rich hydrothermal fluids over millions of years.
Uses & applications
Cut and polished into cabochons for high-end jewelry and collector specimens.
Geological facts
Its distinct iridescent play of color is caused by interference of light passing through thin layers of limonite or goethite.
Field identification & locations
Identified by its botryoidal outer texture and flashing iridescent fires of red, orange, and green when turned in the light.
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