Mineral
Agate
SiO2
AI-generated identification · may be incorrectHardness: 6.5-7 (Mohs scale), Color: White, gray, translucent with banding, Luster: Waxy to vitreous, Crystal structure: Cryptocrystalline, Cleavage: None, Specific gravity: 2.58-2.64
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: White, gray, translucent with banding, Luster: Waxy to vitreous, Crystal structure: Cryptocrystalline, Cleavage: None, Specific gravity: 2.58-2.64
Formation & geological history
Formed from silica deposited in rock cavities, often volcanic. The banding represents rhythmic crystallization over time.
Uses & applications
Used in jewelry, typically cabochons, and ornamental objects for its attractive banding. Also collected by hobbyists.
Geological facts
Agates are characterized by their fine grain and bright colors, although this specimen is more muted. The banding is often concentric.
Field identification & locations
Identify by its waxy luster, hardness (can scratch glass), and distinctive banding. Found worldwide, particularly in volcanic rocks.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous