Two Australian Boulder Opal Specimens
Updated October 27, 2026
| Lot number | 55 |
| Auction | 11-15-2026 Gold, Diamonds, 14k Rolex, Gemstones, Cameos! |
| Date | November 15, 2026 at 7:01 PM EST |
| Auction house | Tom Hall Auctions, Inc |
| Location | Schnecksville, Pennsylvania |
This lot features two specimens of natural Australian boulder opal, including a polished Yowah Koroit opalized wood drilled bead and a rough opal in matrix. The polished cabochon displays deep indigo and violet-blue play-of-color and measures approximately 23 x 21 x 6.5mm. The accompanying rough specimen exhibits blue and cyan flashes within a sandstone matrix and measures approximately 17 x 8 x 6mm.The specimens are in good condition. The polished bead appears ready for a setting with a high-gloss finish, while the rough specimen retains its natural mined state.
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