mineral

Tree Agate

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 6.5-7.0 (Mohs scale), Color: White base with green dendritic inclusions, Luster: Vitreous to waxy, Crystal Structure: Trigonal/Microcrystalline, Cleavage: None (Conchoidal fracture), Specific Gravity: 2.58-2.64

Hardness: 6

Identified January 13, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the cooling of silica-rich groundwater in cavities of igneous rocks. The dendritic green patterns are caused by manganese or iron oxide inclusions during the crystallization process over millions of years.

Uses & applications

Primarily used in jewelry (cabochons, beads), decorative carvings, lapidary arts, and as a popular collector's stone due to its unique patterns.

Geological facts

Unlike 'true' agates, Tree Agate is technically a variety of chalcedony that does not exhibit banding; its name comes from its visual resemblance to foliage or forest scenery.

Field identification & locations

Identify in the field by its characteristic white and green 'mossy' or 'branch-like' patterns; it is primarily found in India, Brazil, and the USA. Collectors look for a high contrast between the opaque white quartz and deep green dendrites.

Other mineral specimens

See all

Gneiss or Schist

Gneiss or Mica Schist with Garnet

Metamorphic

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Tumbled granite

Granite, a coarse-grained felsic intrusive igneous rock

igneous

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Pegmatite with Tourmaline and Quartz

Igneous Pegmatite

igneous

Granite

Granite (Phaneritic intrusive igneous rock)

igneous