Rock Identifier
Dyed Agate (SiO2 (Silicon Dioxide)) — Mineral
Mineral

Dyed Agate

SiO2 (Silicon Dioxide)

Hardness: 6.5-7 (Mohs scale), Color: Artificially dyed orange/red and blue, Luster: Vitreous to waxy, Crystal structure: Cryptocrystalline, Cleavage: None, Specific gravity: 2.58-2.64

Hardness
6
Identified More mineral

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Physical properties

Hardness: 6.5-7 (Mohs scale), Color: Artificially dyed orange/red and blue, Luster: Vitreous to waxy, Crystal structure: Cryptocrystalline, Cleavage: None, Specific gravity: 2.58-2.64

Formation & geological history

Formed in cavities of volcanic rocks or ancient lavas. This specific specimen has been artificially dyed after mining to create the vibrant colors.

Uses & applications

Used primarily in jewelry as cabochons or beads, and for ornamental carving.

Geological facts

Agate is highly porous, which allows it to be easily dyed in brilliant, unnatural colors like the bright blue and orange seen here.

Field identification & locations

Identified by its banding patterns and translucency. Natural colors are usually more muted. Easily found worldwide, but prominent sources include Brazil and Uruguay.