A large pear-shaped Welo opal with strong play-of-color across the entire surface
Ethiopian Welo opal forms in rhyolitic volcanic rock layers rather than sedimentary deposits, which is why they behave differently from Australian sedimentary opal
Popcorn bidding is in effect: bids placed in the last 5 minutes will extend the auction by 5 minutes
25.165 carats / 34.2 x 19.0 x 8.2 mm
Estimate: $750 - $800