Mineral

Dyed Agate

SiO2 (Silicon Dioxide)

Hardness: 6.5-7 on Mohs scale. Color: Natural agate is typically banded and often greyish; this specimen has been dyed deep blue. Luster: Vitreous to waxy. Crystal structure: Cryptocrystalline. Cleavage: None. Specific gravity: 2.58-2.64.

Hardness: 6
Color: Natural agate is typically banded and often greyish
Luster: Vitreous to waxy

Identified June 17, 2026More mineral →

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Physical properties

Formation & geological history

Agates form primarily in volcanic and metamorphic rocks as nodular masses in cavities. Silica-rich fluids percolate into these cavities, depositing layers of chalcedony over time.

Uses & applications

Agate is widely used in jewelry making, ornamental carvings, and for creating decorative items like this heart pendant. Dyeing is a common practice to enhance its appearance for commercial sale.

Geological facts

Agate is highly porous, making it relatively easy to dye in bright, artificial colors like the vibrant blue seen here. The practice of dyeing agate dates back to ancient Rome.

Field identification & locations

Identify dyed agate by its unnatural, extremely vibrant coloration, often with dye concentrating in the micro-fractures or structural bands of the stone. It's affordable and widely available in metaphysical shops and souvenir stores.