Mineral
Agate
SiO2
AI-generated identification · may be incorrectHardness: 6.5-7, Color: translucent white to greyish, Luster: vitreous, Crystal structure: microcrystalline quartz, Cleavage: none, Specific gravity: 2.58-2.64
- Hardness
- 6
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Physical properties
Hardness: 6.5-7, Color: translucent white to greyish, Luster: vitreous, Crystal structure: microcrystalline quartz, Cleavage: none, Specific gravity: 2.58-2.64
Formation & geological history
Forms in cavities of volcanic rocks or ancient lavas from silica-rich groundwater over millions of years.
Uses & applications
Commonly used in jewelry making, ornamental objects, and crystal healing.
Geological facts
Agate is a variety of chalcedony. This particular piece has been polished and drilled to be used as a pendant or charm.
Field identification & locations
Identified by its waxy luster, translucency, and hardness (can scratch glass). Often found in areas with past volcanic activity.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
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
Septarian Pebble
Septarian nodule / Concretion
sedimentary