mineral

Agate (specifically Moss or Plume Agate nodding toward Agatized Wood)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz (Chalcedony)

AI-generated identification · may be incorrect

Hardness: 6.5–7 (Mohs scale); Color: Translucent blue-grey core with brown/red inclusions; Luster: Waxy to vitreous; Structure: Hexagonal (cryptocrystalline); Cleavage: Uneven/Conchoidal; SG: 2.58–2.64

Hardness: 6
Color: Translucent blue-grey core with brown/red inclusions
Luster: Waxy to vitreous

Identified March 20, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the deposition of silica from groundwater into cavities (vugs) within volcanic or sedimentary rocks. This specimen likely formed tens of millions of years ago in a volcanic environment where mineral-rich water seeped into gas bubbles in lava.

Uses & applications

Predominantly used for lapidary arts, jewelry (cabochons), interior decor, and as metaphysical 'healing' stones. In industry, its hardness makes it useful for precision pendulums or mortar and pestles.

Geological facts

Agates are named after the Achates River in Sicily. They are often characterized by rhythmic banding, though this specific piece shows more chaotic 'plume' or 'moss' like inclusions typical of Jasper-Agate transitions.

Field identification & locations

Identify by its waxy luster on broken surfaces and inability to be scratched by a steel knife. It is commonly found in riverbeds or volcanic regions like the American Northwest, Brazil, and India. Collectors look for clarity and unique 'landscapes' within the stone.