mineral
Agate (Dyed) or composite stone
SiO2
Hardness 6.5-7, multicolored (often dyed vibrant blue), vitreous luster, cryptocrystalline quartz.
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Physical properties
Hardness 6.5-7, multicolored (often dyed vibrant blue), vitreous luster, cryptocrystalline quartz.
Formation & geological history
Formed in cavities in eruptive rocks or ancient lavas. The bright blue coloration is usually the result of artificial dyeing.
Uses & applications
Used in jewelry, decorative items, and lapidary arts.
Geological facts
Agate is frequently dyed to produce vivid colors not commonly found in nature.
Field identification & locations
Identify by its waxy luster, banding or patterns, and hardness. Natural agate rarely has this neon blue hue.
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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