mineral

Dyed Blue Agate

Silicon Dioxide (SiO2) - Microcrystalline Quartz

AI-generated identification · may be incorrect

Hardness: 6.5 to 7 on the Mohs scale. Color: Bright teal blue, vibrant turquoise blue, featuring fine concentric banding. Luster: Waxy to vitreous when polished. Crystal structure: Microcrystalline (trigonal). Cleavage: None, exhibits conchoidal fracture. Specific gravity: 2.58–2.64.

Hardness: 6
Luster: Waxy to vitreous when polished

Identified July 26, 2026More mineral →

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Physical properties

Formation & geological history

Agate forms secondary deposits in volcanic cavities or sedimentary rocks through the deposition of silica from hydrothermal fluids. This specific piece has been artificially dyed after tumbling to enhance its natural banding with a striking blue coloration.

Uses & applications

Widely used for ornamental carvings, jewelry, tumbled pocket stones, meditation aids, and decorative lapidary arts.

Geological facts

Agate is porous enough to absorb synthetic dyes easily, which is why bright neon blues, pinks, and purples are common in commercial lapidary trade. Naturally occurring blue agate, like Blue Lace Agate, is typically much softer in color.

Field identification & locations

Identified by its characteristic concentric color bands, smooth conchoidal fracture, and extreme hardness. Easily distinguished from natural minerals by its vivid, unnatural blue dye penetrating along porous growth layers. Found in major agate deposits in Brazil, Uruguay, and Madagascar.