mineral

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale); Color: Translucent yellowish-brown with dark brown/black inclusions; Luster: Vitreous to waxy; Crystal Structure: Hexagonal (Cryptocrystalline); Cleavage: None

Hardness: 6
Color: Translucent yellowish-brown with dark brown/black inclusions
Luster: Vitreous to waxy

Identified June 19, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs scale); Color: Translucent yellowish-brown with dark brown/black inclusions; Luster: Vitreous to waxy; Crystal Structure: Hexagonal (Cryptocrystalline); Cleavage: None

Formation & geological history

Formed through the deposition of silica from groundwater in cavities of igneous rocks. The dendritic (tree-like) patterns are formed by the presence of manganese and iron oxides that seep into the fissures of the crystal as it forms.

Uses & applications

Primarily used in jewelry (cabochons, pendants), lapidary art, and as a collector's specimen due to its unique patterns.

Geological facts

Also known as 'Stone of Plentitude,' it has been associated with Greek dryads and was famously used in ornaments found in the royal family of Russia's Fabergé collection.

Field identification & locations

Identify by its translucency coupled with dark, fern-like or moss-like inclusions. Commonly found in Brazil, India, Madagascar, and the USA. Collectors look for high contrast between the host agate and the dendritic inclusions.