mineral
Banded Agate (Tumbled Pebble)
Silicon Dioxide (SiO2)
Hardness: 6.5-7 Mohs. Luster: Waxy to vitreous. Color: Creamy white, beige, light brown, with purple-brown banding. Crystal System: Microcrystalline (trigonal). Cleavage: None, exhibits conchoidal fracture.
- Hardness
- 6
- Color
- Creamy white, beige, light brown, with purple-brown banding
- Luster
- Waxy to vitreous
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Physical properties
Hardness: 6.5-7 Mohs. Luster: Waxy to vitreous. Color: Creamy white, beige, light brown, with purple-brown banding. Crystal System: Microcrystalline (trigonal). Cleavage: None, exhibits conchoidal fracture.
Formation & geological history
Formed through the deposition of microcrystalline silica in volcanic rock cavities or sedimentary environments, creating distinct concentric or parallel color bands.
Uses & applications
Used in lapidary arts, jewelry, craft projects, energy/crystal healing collections, and as decorative polished stones.
Geological facts
Agate is named after the Achates River (now called the Dirillo River) in Sicily, where it was first discovered in ancient times.
Field identification & locations
Identified by its waxy luster, hardness (scratches glass), smooth tumbled texture, and characteristic color banding. Found globally in volcanic regions, riverbeds, and gravel deposits.
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