mineral
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
Hardness: 6.5-7 (Mohs scale), Color: White with green moss-like dendritic patterns, Luster: Vitreous to waxy, Crystal Structure: Hexagonal (trigonal), Cleavage: None
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: White with green moss-like dendritic patterns, Luster: Vitreous to waxy, Crystal Structure: Hexagonal (trigonal), Cleavage: None
Formation & geological history
Formed through the cooling of volcanic lava where silica-rich groundwater seeps into cavities and minerals like chlorite create dendritic inclusions. Often found in India, Brazil, and the USA.
Uses & applications
Popular in lapidary work for cabochons, beads, and tumbled stones. Frequently used in jewelry making and as a collector's specimen for its unique patterns.
Geological facts
Unlike 'Moss Agate' which is translucent, Tree Agate is primarily opaque white with distinct branch-like patterns that resemble the foliage of a tree. It has been used since ancient times as a talisman for gardening and agriculture.
Field identification & locations
Identify by its opaque milky white base and dark green tree-like or fern-like branching patterns. It is heavy for its size and cannot be scratched by a steel knife.
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