A reserve price quietly shapes the outcome of almost every jewelry auction. It decides whether a lot sells or passes, even though you will never see the number. This guide explains what a reserve is, how it relates to the estimate and starting bid, and how to bid with it in mind.
Quick Answer
A reserve price is the confidential minimum a seller will accept for a lot. If bidding does not reach it, the lot goes unsold — often called "bought in" or "passed." Reserves are usually set at or below the low estimate and are rarely disclosed publicly. On Each Jewelry, reserve price is shown only for upcoming lots when the auction house publishes it.
1.What is a reserve price?
A reserve price is the lowest amount a seller is willing to accept for a lot. It is agreed privately between the seller and the auction house before the sale, and it is kept confidential from bidders.
If the highest bid meets or exceeds the reserve, the lot sells. If bidding stops below the reserve, the lot does not sell — it is "bought in" and returned to the seller.
Key point
The reserve is not the estimate and not the starting bid. It is a hidden floor: you cannot see it, but it determines whether the lot can change hands.
2.How reserve prices work
During the sale, the auctioneer takes rising bids. The lot can only be sold once bidding has cleared the reserve. Until then, the auctioneer may place bids on behalf of the seller, up to (but not exceeding) the reserve.
Sold: Highest Bid ≥ Reserve Price
Unsold (bought in): Highest Bid < Reserve Price
3.Reserve vs. estimate vs. starting bid
These three numbers are easy to confuse, but they play very different roles.
Reserve price
The confidential minimum the seller will accept. Shown on Each Jewelry only when the source publishes it.
Estimate
The public price range the auction house expects the lot to sell within.
Starting bid
The opening bid the auctioneer asks for, often set below the reserve to build momentum.
4.Why auction houses set reserves
A reserve protects the seller from having a valuable piece sell for far less than it is worth on a slow day. Without one, a single low bid could win an expensive lot.
At the same time, houses keep reserves reasonable. A reserve set too high discourages bidding and leaves lots unsold, which helps no one. The goal is a floor that protects the seller while still attracting competitive bids.
Key point
A well-set reserve is low enough to invite bidding and high enough to protect the seller — which is why it usually sits at or below the low estimate.
5.How reserves are determined
The reserve is negotiated between the seller and the auction house and recorded in the consignment agreement. As a rule, it cannot exceed the low estimate — many houses make this an explicit policy.
Some lots carry no reserve at all. These "no reserve" lots will sell to the highest bidder regardless of price, which can create real opportunities (and occasional bargains) for buyers.
6.Example scenario
Consider a ring with an estimate of $2,000–$3,000 and a confidential reserve of $2,000.
In Scenario A the bidding never cleared the $2,000 reserve, so the lot passed. In Scenario B it did, so the lot sold — and the buyer then pays the hammer price plus buyer’s premium and any applicable taxes.
7.Tips before you bid
- Remember you cannot see the reserve — use the low estimate as your best clue to where it sits
- Treat the starting bid as an invitation, not a sign the lot will sell that cheaply
- Watch for "no reserve" lots, where the highest bid always wins
- If a lot goes unsold, ask the house about an aftersale — passed lots are sometimes available afterward
- Budget for the full cost: hammer price plus buyer’s premium and taxes, not just the bid
