Mineral
Agate
SiO2
Hardness: 6.5-7; Color: White and grey banded; Luster: Waxy to dull; Crystal structure: Cryptocrystalline; Cleavage: None; Specific gravity: 2.58-2.64
- Hardness
- 6
- Color
- White and grey banded
- Luster
- Waxy to dull
Identified More mineral →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6.5-7; Color: White and grey banded; Luster: Waxy to dull; Crystal structure: Cryptocrystalline; Cleavage: None; Specific gravity: 2.58-2.64
Formation & geological history
Formed in volcanic rocks or ancient lavas, in cavities produced by the disengagement of volatiles from the molten mass.
Uses & applications
Used in jewelry, such as pendants, due to its hardness and ability to take a polish.
Geological facts
Agate was highly valued as a talisman or amulet in ancient times.
Field identification & locations
Identified by its characteristic banding and waxy luster. Commonly found worldwide. A good stone for beginners to collect and polish.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Nephrite Jade
Nephrite
Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
![Green Apatite on Albite (Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]) — mineral](https://media.rockidentification.com/2391a63f-fb20-47d5-af9a-2035851eb32e-thumbnail.jpg)
Green Apatite on Albite
Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]
mineral