Auctions & Estates

Where the trade marks itself to market

Every hammer price is a data point the whole industry reprices against. The auction desk previews and reports the jewelry sales at Christie's, Sotheby's, Phillips and Bonhams, tracks private treaty and estate flows, and reads provenance the way analysts read balance sheets.

Latest

Il Ponte's jewellery sale totals over €3 million, 98% of lots soldThe Milan house's off-calendar Important Jewellery auction ran on 7 and 8 October. A Nardi coral necklace and a Cartier pearl-and-diamond choker each sold for €88,200, among the highlights it names.

What’s moving now

Results · Geneva

Signed period jewels carry the season

Cartier Art Deco, JAR, early Bulgari — signed and dated material clears high estimates while generic goods labor. The market is paying for authorship, not just material.

Supply · New York

Estate supply is the decade's quiet flood

Generational wealth transfer is bringing decades of collections to market. The houses are building entire departments to catch it — and the trade buys its future inventory there.

Structure · Global

Private sales eat the middle

Six-figure stones increasingly trade by private treaty instead of the room — faster, quieter, fee-flexible. The public sale is becoming the shop window; the deal happens after.

The working vocabulary

The trade’s terms, plainly told. More in the Field Guide.

Hammer vs. premium Term
The hammer price is what the gavel confirms; the buyer's premium goes to the house on top. The rate is tiered by lot value and differs by house, so read that house's own published schedule rather than a single number. Read carefully: reports mix the two, and the difference is the house's entire business.
Provenance Concept
A jewel's chain of ownership. A documented duchess multiplies value like a lab report multiplies a ruby's — history is the one gem that can't be mined.
Reserve Practice
The confidential minimum below which a lot won't sell. 'Bought in' means the reserve wasn't met — auction-speak for a price the market refused.
Fresh to market Signal
A piece unseen for decades. Freshness is the auction world's scarcity premium; a jewel flipped twice in five years trades tired.

On the record

What this desk filed in the last eight weeks, dated and sourced.

  1. This week, August 20 to September 23

    Lyon & Turnbull's sale beat its high estimates only on three pearl lots

    Corrected 25 October 2026: lyon-and-turnbull-sells-98-of-113-jewellery-lots.html (No. 096, 24 October 2026) carried the subhead 'Sold lots beat their high estimates'. Without three natural pearl lots, the other 95 sold lots made £262,620 against £287,450 in high estimates, 8.6% under. What was right as published: every figure.

    Source: Carat Capital, a-lyon-and-turnbull-sells-98-of-113-jewellery-lots.html; standards audit of 24 October 2026; Lyon & Turnbull lot data, sale 921

  2. This week, August 20 to September 23

    Two Bulgari multiples withdrawn until the premium basis is known

    Updated 21 October 2026: eight-seventeen-carats-sells-under-its-low.html (No. 091, 19 October 2026) gave two Bulgari lots as 2.56 and 3.66 times their high estimates. Rapaport does not say whether its sale prices include the buyer's premium, and nine of ten prices fit a hammer-plus-premium pattern. The multiples are withdrawn; prices and estimates stand.

    Source: Carat Capital, a-eight-seventeen-carats-sells-under-its-low.html; Carat Capital standards audit, 2026-10-19 and 2026-10-20.md

  3. This week, August 20 to September 23

    The 8.17-carat ring's low estimate, settled by the result

    Updated 19 October 2026: three-fifty-on-an-eight-seventeen.html (No. 084, 8 October 2026) said no low estimate was published for Christie's 8.17-carat D/IF ring, and on 10 October this paper disclosed that JCK gave $250,000 to $350,000. Rapaport's 18 October results report prints the same $250,000 to $350,000 and confirms the ring sold without reserve, for $243,200. The low estimate was $250,000; the original statement was true of the Rapaport preview it read and is not true of the sale. What was right as published: the $350,000 top of the range, the no-reserve term, the sale dates and the lot count.

    Source: Carat Capital, a-three-fifty-on-an-eight-seventeen.html; Rapaport RSS feed, 18 October 2026 (a saved copy, 54,832 bytes); JCK, 9 October 2026

  4. This week, August 20 to September 23

    Two houses disagree on whether Christie’s published a low estimate

    Disclosed 10 October 2026: “8.17-carat D/IF ring carries $350,000 at Christie’s, no reserve”, published 8 October 2026 in No. 084, reported that no low estimate was published for the sale’s top lot and built a section on the no-reserve term. Rapaport, the source that article used, carried it that way. JCK, writing on 9 October about the same lot in the same sale, states an estimate of $250,000 to $350,000. Carat Capital cannot settle which is right: Christie’s own sale page for Jewels Online New York 24557 was fetched this morning at 978,864 bytes and returns 200, but its lot data is rendered in the browser and the only “8.17” strings in the raw bytes are SVG path coordinates, and the house’s lot-search endpoint returns 404. The two outside reports are therefore printed against each other rather than reconciled, and the $350,000 top of the range — the one figure both carry — is the only estimate this paper stands behind for that lot. Bidding closes 15 October 2026; the result will settle it.

    Source: Carat Capital, a-three-fifty-on-an-eight-seventeen.html; JCK, 9 October 2026; Rapaport; Christie’s sale page for online auction 24557 (fetched 10 October 2026, 200, lot data not readable)

  5. This week, August 20 to September 23

    23.34-carat yellow diamond tops Phillips Hong Kong at HKD 4.3m

    Yellow led, not sapphire. A 23.34-carat fancy-intense-yellow diamond ring took HKD 4.3m at Phillips in Hong Kong. The sale made HKD 37.2m, or $4.7m, from 91 lots.

    Source: Fancy-Yellow Diamond Takes Top Spot at Phillips Sale, Rapaport News, 2026-09-30

Read the full Record