The honest answer is: it depends, and on more than you might think. Two Art Deco pieces that look alike can be worth wildly different amounts. This guide explains what actually drives value - and why the price you see online is rarely the price a seller receives.
No price list can value your piece. Only an assessment of the actual item can.
Most confusion about value comes from a single mistake: treating "worth" as one number. It is not. A piece of Art Deco jewellery has several different values at once, depending on who is buying, how and when. Before looking at what drives value, it helps to separate the numbers that people quote.
| The number | What it really is |
|---|---|
| Asking price | What a dealer or seller hopes to achieve at retail. It is an aspiration, not a sale, and pieces can sit unsold for a long time. |
| Dealer retail | The price a specialist dealer sells at, including their expertise, guarantees, overheads and margin. |
| Auction estimate | A guide range set before a sale. It is not a valuation and not a promise. |
| Auction hammer | What a bidder actually paid. A buyer then adds buyer's premium; a seller has seller's commission and fees deducted. |
| Private-sale price | What one private individual pays another, with no trade margin but also no guarantee or protection. |
| Direct-buyer offer | What a buying company will pay you now, quickly and with certainty, for the piece as it is. |
| Seller's net proceeds | What you actually keep after commissions, fees and deductions. This is usually well below any retail asking price. |
The key point: asking price, dealer retail, auction hammer, private-sale price, a direct-buyer offer and a seller's net proceeds are all different numbers for the same object. When someone says a piece is "worth" an amount, always ask which of these they mean.
With that clear, here are the factors a specialist weighs. None works alone; value comes from how they combine.
Art Deco ran roughly through the 1920s and 1930s, defined by bold geometry, symmetry and the machine age. Because the look has been reproduced ever since, the first question is whether a piece is genuinely of the period or a later piece in the Deco style. A period original and a modern reproduction of the same design can sit far apart in value, which is why identification comes before pricing. Our guide to identifying antique jewellery explains how age is read.
A genuine signature from a leading house of the period can add enormously to value, sometimes beyond the worth of the materials. But the mark must be genuine and consistent with the piece, since signatures can be faked or added. Signed, attributed and unsigned are three different things, and high attributions are often supported by archives or documentation rather than a mark alone.
Platinum defined fine Art Deco jewellery, because its strength allowed dense concentrations of stones in minimal settings; from the mid-1930s gold returned partly on cost. Diamonds, calibre-cut coloured stones such as sapphire, emerald and ruby, natural pearls, and hardstones like onyx, jade and coral all feature. Materials set a floor of intrinsic value, but in the best pieces they are far from the whole story.
Within the Deco style, quality varies widely. Crispness of geometry, balance, the precision of the stone-setting and the ambition of the design all matter. A confident, well-made piece will always be assessed more favourably than a timid or crudely made one of similar materials.
Original condition is prized. Replaced clasps, re-cut or replaced stones, resizing, solder repairs and worn millegrain all bear on value. Alteration or restoration does not automatically make a piece unsaleable, but it can materially affect attribution, collector interest and valuation, and a specialist will always look for what is original and what is later.
Documented history - original boxes, receipts, certificates or a known ownership line - supports both authenticity and value, particularly for signed pieces. Provenance rarely creates value on its own, but it can confirm and strengthen it.
It is tempting to search for a similar piece and assume that figure is yours. Two traps make this unreliable. First, most listed figures are asking prices, not sold prices, and an asking price proves only what someone hoped for. Second, even a genuine sold result belongs to that piece, with its own condition, documentation and signature, at the moment it sold. A near-identical-looking piece can differ in ways that change value dramatically. Treat online figures as background, never as a valuation of your item.
You have it assessed by someone who can examine and test it in person. Value depends on confirming the metal, the stones, the authenticity of any signature and the true condition - none of which can be settled from a photograph. A good assessment tells you what the piece is, what is original, and a realistic figure for the route you choose to sell, whether that is auction, private sale or a direct offer. If you are ready to sell, our sell Art Deco jewellery page explains how Fair Vintage buys, and antique valuation covers the assessment itself.
Before assessment: do not aggressively clean or polish antique jewellery. Cleaning can strip original finish, loosen stones and remove the very evidence of originality that supports value. Present the piece as it is.
Call us on 01234 815116 or email support@fairvintage.co.uk.
Get a free estimate →There is no single figure, because value depends on the individual piece and on what you mean by worth. An unsigned silver and marcasite Deco brooch and a signed platinum and diamond bracelet by a major house sit at completely different levels. Value is driven by period authenticity, the maker, the materials, the quality of the design and the condition. Anyone who quotes a firm price without seeing and testing the actual piece is guessing, which is why a proper assessment matters more than any price list.
Because the numbers people quote measure different things. A dealer's asking price is what they hope to sell for at retail. An auction estimate is a guide, the hammer price is what a buyer actually bid, and on top of the hammer a buyer pays commission while a seller has commission deducted. A private-sale price is different again, and a direct-buyer offer is what a company will pay you now. These are not contradictions; they are different points in the chain, and a seller's net proceeds are usually well below any retail asking price.
A genuine signature from a leading Art Deco house can add very significantly to value, sometimes more than the materials themselves. But the signature has to be genuine and consistent with the piece, because marks can be faked and added. A signed piece needs its mark, its construction and its materials all to agree, and high-value attributions are often supported by archives or documentation. We describe a piece as signed, attributed or unsigned honestly, and never treat a mark alone as proof.
Use them with caution. Online listings often show asking prices, not prices anything actually sold for, and even genuine sold results reflect that specific piece, its condition, its documentation and the moment it sold. A superficially similar piece can differ in ways that change value dramatically, such as a replaced clasp, re-cut stones or a later copy of an earlier style. Online figures are a rough backdrop, not a valuation of your piece.
Have it assessed by someone who can examine and test it. Value cannot be settled from a photograph, because it depends on confirming the metal, the stones, the authenticity of any signature and the true condition. A good assessment tells you what the piece is, what is original, and what a realistic figure looks like for the route you choose to sell. Do not aggressively clean or polish the piece first, as that can reduce value and remove evidence of originality.
Send clear photos of the piece and any signature or marks for a free estimate. We examine the construction, test the metal and stones and put a value in writing. Opened and documented. Anything you decline comes back free.