7 tips for buying jewellery at auction
Buying jewellery at auction can be a rewarding way to find unusual pieces that are no longer widely available through traditional retailers. Many items also carry their own distinctive history and collectable appeal, sometimes at prices that compare favourably with retail alternatives. One Auction House reports that retail mark-up can be as much as 300% - so you could find a distinctive piece at a price below typical retail levels.
That said, auction purchases work differently from other retail purchases, so it is sensible to understand how the process operates before placing a bid.
1. Understand what estimates really mean
Auction catalogues normally include an estimate for each lot. This figure reflects the auctioneer’s expectation of the likely selling range based on comparable results, condition and market interest at the time of the sale. It should not be treated as a formal valuation.
It’s quite common for jewellery to sell above or below its estimate depending on competition in the room or online. Setting a personal limit (as well as allowing for costs mentioned in points 2 and 3 below) before bidding begins can help keep decisions measured rather than reactive.
2. Allow for charges beyond the hammer price
The final bid is only part of the amount payable. Most auction houses apply a buyer’s premium, commonly somewhere between 10% and 30%, together with VAT where applicable.
Additional costs may also apply, including but not limited to insured delivery, online bidding platform fees or resizing work after collection.
Allowing for these in advance helps avoid unexpected increases to the overall purchase cost.
3. Read condition information closely
Catalogue descriptions are intended as summaries rather than full technical assessments, but auction houses will often provide more detailed condition reports if requested.
Understanding the piece’s condition is especially important because auction purchases are usually final once the hammer falls. Hidden wear to claws, thinning shanks or later alterations may require additional work after purchase and increase the overall cost of the item.
4. Try to attend a viewing session
Preview days are a normal part of most jewellery auctions. Seeing a piece in person makes it easier to judge scale and colour, and may reveal details that are difficult to capture in catalogue photography.
5. Examine hallmarks and metal descriptions
Precious metals above certain weights are generally required to carry hallmarks confirming fineness under the UK Hallmarking Act 1973. These marks relate to the metal itself rather than any gemstones present.
Older jewellery may display historic hallmarks instead of modern ones, and imported items sometimes use different systems altogether. Auction specialists can normally explain these where necessary.
Gemstones described without laboratory certification are typically identified using the auctioneer’s professional assessment rather than independent grading.
Our Guide to Hallmarks and Hallmarking explains this in more detail.
6. The importance of documentation – pre- and post-auction
Many older pieces are offered without paperwork simply because records have not survived over time. If present, however, original boxes or gemstone certificates can provide useful background before you bid and may assist when arranging insurance afterwards.
If you win the bid, and additional paperwork is available, keep the documentation safely stored - these may be useful when arranging insurance or updating valuations later.
7. Auction sales are usually binding once completed
Unlike retail transactions, jewellery bought at auction is generally sold on an “as seen” basis. Once bidding ends successfully, the purchase normally becomes binding under the auctioneer’s terms and conditions.
Some auction houses may provide limited authenticity assurances for certain materials or designer names, although these vary between sales.
Protecting your jewellery
Once you have bought jewellery at auction, it is sensible to review your jewellery insurance arrangements. Specialist jewellery or engagement ring insurance can help provide protection for your item against risks such as theft, accidental loss or damage, depending on the policy selected.
Call us today on 0208 0033 190 for a no-obligation quotation or to discuss suitable cover for your individual circumstances.
Further reading: Buying an engagement ring at auction.
