Part of: Sell your Theo Fennell jewellery
Theo Fennell is a London jeweller known for sculpted gold and silver with a sense of humour: skulls, crosses, ornate keys, and opening rings with tiny enamelled scenes inside. He trained as a silversmith and opened his own workshop in 1982. Pieces are signed and carry full British hallmarks. This guide shows how to recognise, date and value them.
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A silversmith's eye
Theo Fennell trained as a silversmith and designer at Edward Barnard, the long-established London silversmiths, before opening his own workshop in 1982. His shop on the Fulham Road in Chelsea became well known, and his work has kept a silversmith’s care for detail: sculpted surfaces, engraving, enamel and interiors made to be opened.
- Training at Edward Barnard
- 1982Own workshop
- Fulham Road, Chelsea
- Alias silver line
- Opening rings series
The designs to know
- Skulls. Rings, pendants and cufflinks, plain or gem-set.
- Crosses. Engraved and gem-set gold crosses.
- Keys. Ornate key pendants and charms, often enamelled.
- Bombe and cocktail rings. Domed, sculpted rings with coloured stones.
- Opening rings. Tiny doors and lids opening onto enamelled scenes.
- Alias. The silver line of skulls, hearts and keys.
- Skull ring
Opening rings
Some of the most elaborate pieces hide their best part inside: an opening ring has a small lid or door, made to move, that reveals an engraved or enamelled scene. The Secret Garden ring of 2011 began a limited series. If you own one, the mechanism and the enamel inside matter as much as the outside.
- 1Opening ring shown closed
- 2Open
How to tell a genuine piece
For every house we buy, see how we check designer jewellery.
- 1Signature
- 2Sponsor's mark
- 3Fineness
- 4Leopard's head
- 5Date letter
0 of 4 checked
1The signature
The signature "Theo Fennell", or his initials on smaller pieces.
2The British hallmark
Sponsor’s mark, fineness (750, 925 or 950), the assay office mark, usually London’s leopard’s head, and a date letter.
3The modelling
Crisp detail on every surface, including the back and inside the shank.
4Enamel and stones
Even enamel and neatly set stones.
Red flags
- No signature, or a signature that is soft or crooked.
- No British hallmark on a piece said to be Theo Fennell.
- Soft, cast-looking detail and a rough inside.
- Chipped or patchy enamel.
- An opening mechanism that sticks or rattles.
Genuine
- Crisp sculpting
Copy
- Soft, cast-looking detail
What is my Theo Fennell piece worth?
A Theo Fennell piece is valued on its design and whether it is a regular piece, a small run or a one-off commission, the gold or silver and any stones, the condition of the sculpted detail, enamel and mechanisms, completeness (box, receipt, commission drawings), and current demand. We never publish figures. To sell, see our Theo Fennell selling page.
Free, no obligation, and returned at our cost if you decline.
Read our Google reviews (opens Google)
- Design
- Rarity
- Materials
- Condition
- Completeness
- Demand
How selling works
- 1
Send photographs
of the front, the inside with its signature and hallmark, and any box or papers.
- 2
Free value inspection
We reply within one working day with an estimate, subject to inspection. If our offer differs, you can decline and we return it at our cost.
- 3
Paid the same day after inspection
by bank transfer or in cash, in Mayfair, at our Braintree office, by post or by free collection.
Insured up to £10,000 per parcel when you send to us.
Questions people ask
What is Theo Fennell jewellery known for?
Theo Fennell, a London jeweller who trained as a silversmith and opened his workshop in 1982, is known for sculpted gold and silver with wit: skulls, crosses, ornate keys, Bombe rings and opening rings with enamelled scenes inside. His silver line, Alias, carries the same motifs. Pieces are signed and fully hallmarked in Britain.
How do I identify a genuine Theo Fennell piece?
Look for the "Theo Fennell" signature or his initials, and a full British hallmark: sponsor’s mark, 750, 925 or 950, the assay office mark and a date letter. The sculpted detail should be crisp everywhere, including inside the shank. No single detail proves it. Send clear photographs and we will check them, free.
How do I date my Theo Fennell jewellery?
From the British hallmark. The date letter gives the year the piece was hallmarked, and the assay office mark, usually London’s leopard’s head, tells you where. Read with the design, it places the piece exactly. Send a close photograph of the marks and we will date it for you.
How much is my Theo Fennell jewellery worth?
It depends on the design, whether it is a regular piece, a small run or a commission, the metal and stones, the condition of the detail, enamel and any mechanism, and completeness, together with current demand. We do not publish prices. Our Theo Fennell selling page explains how to get a free value inspection.
Are Theo Fennell opening rings collected?
They are among his most elaborate pieces, made in small numbers with working lids and enamelled interiors, so collectors look for them. Their value depends on the design, the condition of the mechanism and the enamel, and completeness. Please do not try to repair a stiff mechanism; send photographs first.
Do you buy Theo Fennell Alias silver?
Yes. We buy Alias silver, Theo Fennell’s silver line of skulls, hearts, keys, charms and cuffs, as well as his gold jewellery. Silver pieces are valued on their design and condition. Please photograph the front, the signature and the 925 mark, and send them for a free value inspection.
Related guides
Selling Theo Fennell?
Send a photograph of the piece, its signature and its hallmark for a free value inspection, with no obligation.
Free, no obligation, returned at our cost if you decline.
