Tree Agate tumbled
A variety of Tree Agate
What is Tree Agate tumbled?
Tree Agate tumbled is a popular agate valued for its dendritic, tree-like patterns that are revealed when the material is tumbled and polished. This stone is mined in Australia, Brazil, China, India, Madagascar, Mexico, Mongolia, Namibia, Uruguay, and the United States. It can be finely tumbled and polished, as well as cut into cabochons and beads.
Optical Properties
- Refractive Index
- 1.530-1.543
- Birefringence
- 0.003-0.009
- Pleochroism
- None
- Optical Character
- Biaxial positive
- Dispersion
- 0.013
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Tree Agate tumbled before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Tree Agate tumbled Localities Map
See where Tree Agate tumbled is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Streak
- White
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- O, Si
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