£1.2 million stops short of an 8.03-carat blue's reserve
Elmwood's offered the fancy light blue in London on 1 October against an estimate of £1.5m to £2m. The highest hammer price anything in the sale did make was £13,000.
By The Auctions Desk
What changed
The reserve was not met. Elmwood's 8.03-carat fancy light blue failed to sell in London. Bidding stopped at £1.2 million against a £1.5 million low estimate.
What it means
- If you consign a coloured diamond: The bid stopped a fifth short of the low estimate, not fractionally short.
- If you estimate for a house: Nothing else in this sale cleared above £13,000.
- What this is not: A withdrawal, or a value for the stone.
Key figures
| Top bid on the 8.03ct blue20.0% below the £1.5m low estimate | £1.2m |
|---|---|
| Pre-sale estimate$2m to $2.6m, source's conversion | £1.5–2m |
| Highest hammer price in the saleTiffany & Co. 1.84ct D/VVS1, within estimate | £13,000 |
| Failed bid against the sale's best printCC division, 1,200,000 / 13,000 | 92× |
Source: Sale held 1 October 2026 at Elmwood's, London; result reported by National Jeweler on 9 October 2026. Dollar conversions are the source's own.
The bid stopped short
One point two million. Bidding on the 8.03-carat fancy light blue topped off at £1.2 million, about $1.6 million, and did not meet the seller's reserve.
A fifth below. That is 80.0% of the £1.5 million low estimate, so 20.0% under it.
Forty below the high. Against the £2 million high estimate the same bid is 60.0%, so 40.0% under it.
Grading is not it. The GIA report gives even colour distribution, VS2 clarity and no fluorescence. Elmwood's calls it the third largest blue ever offered at a UK auction.
| Lot | Hammer | Against estimate |
|---|---|---|
| 8.03ct fancy light blue diamond | Unsold, bidding to £1.2m | £1.5m–£2m, reserve not met |
| Tiffany & Co. ring, 1.84ct D/VVS1 | £13,000 ($17,200) | Within estimate |
| Art Deco “Tutti Frutti” clip brooch | £8,000 ($10,600) | At the low estimate |
| Van Cleef & Arpels Art Deco vanity case | £5,800 ($7,700) | Just below the low estimate |
| Vintage gold and sapphire bracelet | £5,500 ($7,275) | Within estimate |
| Platinum ring, 5.45ct step-cut sapphire, c.1940 | £5,500 ($7,275) | Within estimate |
Notes on this table
The arithmetic, printed so it can be checked. 1,200,000 divided by 1,500,000 is 0.800, so the top bid is 80.0% of the low estimate and 20.0% below it. 1,200,000 divided by 2,000,000 is 0.600, so it is 60.0% of the high estimate and 40.0% below it. 1,200,000 divided by 13,000 is 92.3, so the failed bid is 92 times the sale's highest hammer price. Dollar figures in the right-hand columns are National Jeweler's own conversions and are not recomputed here.
Everything else cleared four figures.
Thirteen thousand topped it. A Tiffany & Co. ring with a 1.84-carat D/VVS1 round took £13,000, inside estimate. That was the sale's highest hammer price.
Then eight thousand. An Art Deco Tutti Frutti clip brooch made £8,000 at its low estimate. A Van Cleef & Arpels vanity case took £5,800, just below its low estimate.
Two at five five. Two sapphire jewels each sold within estimate at £5,500. One is a vintage gold bracelet; the other a c.1940 platinum ring on a 5.45-carat step-cut sapphire.
Same stone, second stage
We priced it first. Carat Capital published the £1.5 million to £2 million estimate on 23 September, before the sale. This is the outcome of that same lot.
Nine days to report. The sale ran on 1 October and the result was reported on 9 October. The eight-day gap is the reporting lag, not the event.
What to watch
- 21 October 2026Elmwood's antique and vintage jewels sale, the next of its several fine jewellery sales this month.
- Not announcedWhether the 8.03-carat blue is re-offered, placed privately or withdrawn. The house has published no plan for it.
- 10 November 2026Christie's Geneva Magnificent Jewels, where a 24-carat pink carries a CHF 15 million high estimate — the next test of coloured-diamond demand at a far larger number.
The story so far
Go deeper
What would change this call
A private sale at or near the reserve, which would make this a story about the room on the day rather than about demand. It would also read differently if Elmwood's published the reserve: a bid 20% under the low estimate says nothing about how far under the reserve it fell, and the house has not disclosed that figure.
Why an unsold lot is still information
An auction result is usually read off the prices that printed, which makes a no-sale look like an absence of data. It is not. A hammer price tells you what one determined bidder would pay on one afternoon; a failed lot with published bidding tells you where the bidding actually ran out, which is a floor on demand rather than a ceiling on it. The useful number here is therefore not the estimate but the £1.2 million, because that is an amount somebody was willing to commit. The limitation is the reserve. A reserve is a private instruction between consignor and house and is almost never published, so a reader can see how far the bid fell below the printed estimate but not how far it fell below the number that would have released the stone. Those are different distances and only one of them is knowable from outside. The second thing to hold onto is the catalogue. A single seven-figure lot in a sale whose other top five prints run £5,500 to £13,000 draws a different bidder population than the same stone in a sale where the second lot is six figures, because the specialist buyers for a large fancy-colour diamond are not reliably in the room for a £5,800 vanity case.
Method
One primary and one archive page. National Jeweler's report was fetched directly this morning (200, 94,813 bytes, saved to newsroom/sources/2026-10-10/desk/elmwood.html) and every printed figure was greped in the raw bytes before writing: '8.03' 1 hit, '1.5 million' 1, '1.2 million' 1, '1.6 million' 1, 'VS2' 1, '1.84' 6, '13,000' 1, '17,200' 1, '8,000' 1, 'third largest' 1, 'Oct. 1' 6. Figures were taken from the article's own body paragraphs only; the 'Editors' Picks', 'Related Stories' and 'More on Auctions' widgets on this page carry other sales, including a $3.4m Cartier watch and a $1.3m Paraiba tourmaline, and none of those figures is used here. ARCHIVE, period rule, both sides named: ours of 2026-09-23 (a-elmwoods-eight-oh-three-blue.html) covers the PRE-SALE estimate for this stone, £1.5m to £2m; this item covers the SALE OUTCOME of 1 October 2026 for the same stone at the same house in the same sale. Same entity, different stage of the same event — ADVANCED, not a repeat, and what advanced is estimate to result. Entity search run against website/content/articles.json: 'Elmwood' 2 hits, both opened and read — the 2026-08-26 piece is a different sale (a royal brooch at £23,750 and a 1927 feather at £75,000) and the 2026-09-23 piece is this stone's pre-sale. The three comparative percentages and the 92× multiple are Carat Capital's own divisions and are printed with their arithmetic in the table note. Dollar conversions are the source's and are not recomputed.
Sources
- National Jeweler, 8-Carat Blue Diamond Goes Unsold at UK Jewelry Auction (Lauren McLemore) 9 October 2026
- Carat Capital, Elmwood's puts a £2m high estimate on an 8.03-carat blue, 23 September 2026 9 October 2026
- Carat Capital, 24-carat pink diamond carries a CHF 15 million high estimate, 9 October 2026 9 October 2026