Opal auction records
Recorded results for opal at auction: 3. Every row carries the realised total and the price per carat. Origin, weight, disclosed treatment and the laboratory report are shown wherever the catalogue entry stated them.
- Lots
- 3
- Unsold
- 0
- Origins
- 1
- Last read
- Aug 22, 2026
USD 138,975
The Cathedral Window, a fine black opal with pattern
8.90 ct · Australia
Bonhams · Fine Gems, Opals and Lapidary Arts including Property of a Midwest Collector · May 02, 2023bonhams.comThe total the lot achieved, including the buyer’s premium as the house published it. Highest in this ledger, not a claim about every sale ever held.
USD 15,615.17
The Cathedral Window, a fine black opal with pattern
8.90 ct · Australia
Bonhams · Fine Gems, Opals and Lapidary Arts including Property of a Midwest Collector · May 02, 2023bonhams.comDerived from a realised price and a recorded weight. This is the figure the trade compares across sizes, and it is often a different lot from the one beside it.
Per-carat benchmarks for opal
No band yet holds the 3 comparable lots in one currency that a range needs. Thin bands are suppressed rather than smoothed.
Every opal lot recorded
Realised and per carat are two columns of the same table, set at the same size. Order it by whichever you came for. Unsold lots stay in place with their estimates, because what did not sell is a price signal too.
| Sale | Lot | Realised | Per carat |
|---|---|---|---|
| Lot 141Bonhams | 8.90 ct · Australiabonhams.com | USD 138,975 | USD 15,615.17 |
| UnnumberedBonhams | 60.46 ct · Australiabonhams.com | USD 134,500Estimate USD 120,000 – USD 150,000 | USD 2,224.61 |
| Lot 4365Bonhams | 263.18 ct · Australia · None · American Gemological Laboratories, LLCbonhams.com | USD 120,000 | USD 455.96 |
Sources
Every catalogue entry behind the figures on this page, with the date each was read. Where a house has since amended its published result, that date tells you which version this record reflects.
- Fine Gems, Opals and Lapidary Arts including Property of a Midwest CollectorBonhamsbonhams.com
- The World of Opals, The Splendour of GoldBonhamsbonhams.com
- Natural HistoryBonhamsbonhams.com