mineral

Banded Agate (specifically Moss Agate or Plume Agate variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Hardness: 6.5–7 on the Mohs scale. Color: Translucent grey to lavender base with reddish-brown, peach, and cream-colored plume-like inclusions. Luster: Vitreous to waxy when polished. Crystal structure: Trigonal/Hexagonal microcrystals. Cleavage: None (conchoidal fracture).

Hardness: 6
Luster: Vitreous to waxy when polished

Identified March 18, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the deposition of silica from groundwater in the cavities of igneous rocks, such as basalt or rhyolite, or in sedimentary environments. The colorful inclusions are caused by trace oxides of iron and manganese. Most specimens date back tens of millions of years (Cenozoic or Mesozoic eras).

Uses & applications

Primarily used for lapidary arts, jewelry (cabochons), and ornamental carvings. It is popular in the metaphysical community and as a decorative display piece due to its organic, 'scenery-like' inclusions.

Geological facts

Agate belongs to the chalcedony family. Its name is derived from the Achates River in Sicily. The specific specimen shown appears to be a 'Flame' or 'Leaf' shaped polish, likely from Madagascar or Brazil, highlighting internal druzy quartz pockets (vugs).

Field identification & locations

Identify in the field by its hardness (it will easily scratch glass), waxy luster on broken surfaces, and distinct banding or dendritic patterns. Common locations include Madagascar, Brazil, India, and the western United States (Montana, Oregon). Collectors look for high translucency combined with vibrant, high-contrast plume patterns.

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