mineral

Banded Agate

Cryptocrystalline Quartz (SiO2)

Hardness: 6.5-7 on Mohs scale; Color: Orange, cream, and white banding; Luster: Waxy to vitreous; Crystal structure: Hexagonal/Trigonal (microcrystalline); Cleavage: None (conchoidal fracture).

Hardness: 6
Color: Orange, cream, and white banding
Luster: Waxy to vitreous

Identified June 21, 2026More mineral →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Orange, cream, and white banding; Luster: Waxy to vitreous; Crystal structure: Hexagonal/Trigonal (microcrystalline); Cleavage: None (conchoidal fracture).

Formation & geological history

Formed primarily in volcanic and metamorphic rocks through the deposition of silica-rich groundwater within gas cavities (vesicles). Layers form as chemistry changes over time.

Uses & applications

Extensively used in jewelry (cabochons), lapidary art, ornaments, and industrially for precision pendulums, mortars and pestles due to its hardness.

Geological facts

Agate is named after the Achates River in Sicily. Each agate specimen is unique due to the specific conditions of its formation, often containing inclusions of iron or manganese that provide vibrant colors.

Field identification & locations

Identify in the field by its distinctive banding, waxy texture, and translucency. It will scratch steel and glass. Common in riverbeds, beaches, and areas of ancient volcanic activity.