mineral

Blue Banded Agate (Dyed)

Silicon Dioxide (SiO2) - variety of Chalcedony

Hardness: 6.5-7 (Mohs scale); Color: Artificially dyed bright blue and white/translucent; Luster: Vitreous to waxy; Crystal structure: Trigonal/Monoclinic (Cryptocrystalline); Cleavage: None; Specific gravity: 2.60–2.65

Hardness: 6
Color: Artificially dyed bright blue and white/translucent
Luster: Vitreous to waxy

Identified March 15, 2026More mineral →

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Physical properties

Formation & geological history

Formed as a secondary mineral within volcanic rock cavities or ancient sedimentary deposits via silica-rich groundwater deposition. Most commercial agate is millions of years old, often originating from Brazil or India.

Uses & applications

Used primarily in lapidary arts, jewelry (pendants, beads), home decor (coasters, bookends), and as metaphysical/healing stones.

Geological facts

Natural blue agate (like Blue Lace Agate) is usually very pale and subtle; the intense neon blue banding in this specimen indicates it has been artificially dyed using an iron or chromium salt solution and heat treatment.

Field identification & locations

Identify in the field by its conchoidal fracture and distinct, repeating concentric or horizontal banding. This specific slice is a 'nodule section' often found in souvenir shops. Natural coloring would be earthy greys or browns.

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