Olive Opal tumbled
A variety of Olive Opal
What is Olive Opal tumbled?
Olive Opal tumbled is a common opal in a range of olive green colored hues finished with a sheen. Olive Opal tumbled is mined in Kenya, although opal in other shades of green is found elsewhere in the world. It is made into tumbled stones, beads for bracelets, and cut into cabochons which can be set into pendants.
Optical Properties
- Refractive Index
- 1.37-1.52
- Pleochroism
- None
- Optical Character
- Isotropic
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Olive Opal 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.
Quick Facts
Physical Properties
- Streak
- White
Chemical Properties
- Chemical Formula
- SiO2 · nH2O
- Elements
- H, O, Si
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