mineral

Agate

Silicon Dioxide (SiO2)

Hardness: 6.5-7 on Mohs scale; Color: Yellowish-orange to translucent amber; Luster: Waxy to vitreous; Crystal Structure: Microcrystalline/Cryptocrystalline trigonal; Fracture: Conchoidal

Hardness: 6
Color: Yellowish-orange to translucent amber
Luster: Waxy to vitreous

Identified July 28, 2026More mineral →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Yellowish-orange to translucent amber; Luster: Waxy to vitreous; Crystal Structure: Microcrystalline/Cryptocrystalline trigonal; Fracture: Conchoidal

Formation & geological history

Formed through the deposition of silica from solution within cavities of volcanic or sedimentary rocks, often smoothed and weathered by river or glacial erosion.

Uses & applications

Used widely in lapidary arts, jewelry making, cabochons, polished stones, and decorative objects.

Geological facts

Yellow-orange translucent agates are frequently referred to as carnelian agate or honey agate, prized for their glowing translucency under direct sunlight.

Field identification & locations

Look for a translucent, waxy appearance with conchoidal fracture marks and smooth erosion textures. Commonly found along riverbeds, gravel bars, and ocean beaches.