Mineral
Dyed Agate
Chalcedony (SiO2)
Hardness 6.5-7, vibrant artificially enhanced blue color, vitreous luster, cryptocrystalline structure, no cleavage, specific gravity around 2.6
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Physical properties
Hardness 6.5-7, vibrant artificially enhanced blue color, vitreous luster, cryptocrystalline structure, no cleavage, specific gravity around 2.6
Formation & geological history
Agate forms in volcanic cavities as secondary minerals. This specimen has been artificially dyed and cracked to enhance its appearance.
Uses & applications
Used in inexpensive jewelry, crafts, and decorative items due to its durability and color.
Geological facts
Dyeing agate is a practice that dates back to the Roman times. The 'dragon vein' or crackled appearance is often achieved by heating and quickly cooling the stone, then dyeing it.
Field identification & locations
Identified by its bright, unnatural color and crackle pattern which indicates treatment. A common and affordable stone found in many craft and gem shows.
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Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
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Epidote
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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