Swan Neck Ring Stamp Punch — Purity Marks 925, 375, 9K to 22K, Hardened Steel, 78 mm Inside-Shank Marking Tool
£9.99
Sale price £9.99Regular price
Secure checkout
Stamps a purity mark on the inside of a ring shank, where a straight punch cannot reach. For jewellers, silversmiths and repair benches.
13 impressions, one per punch: 925, 999, 920, 916, 750, 585, 375, 333, 9K, 14K, 18K, 21K and 22K. Pick yours from the Impression menu
3 mm x 1.6 mm impression (approx.)
78 mm long, 6.8 mm square bar
Hardened steel, polished finish
Swan neck offset clears the ring, so the face sits flat inside the band
Approx. 50 g
Built for: marking finished rings and bands. Support the ring on a steel mandrel, seat the face inside the shank and strike once, squarely. One firm blow gives a cleaner mark than several light ones.
In the box: 1 x swan neck stamp punch in the impression selected.
A purity stamp is not a UK hallmark. Precious-metal articles sold in the UK above the exemption weights must be hallmarked by an Assay Office.
Our steel letter, number, and design punches are heat-treated to strike non-ferrous metals: silver (sterling, fine), copper, brass, bronze, aluminium, gold. Striking hardened steel will damage the face. For pewter and very soft alloys, use light strikes.
What size impression do I need?
1–2 mm for ring shanks and small pieces (initials, hallmark-style); 3–4 mm for pendant backs and signed plaques; 5 mm+ for presentation pieces and stamped jewellery components. Bigger is not always better — a clean small mark reads better than a struggle with an oversized one.
What do I strike it with?
A 1–2 lb brass mallet on a polished steel bench block. Do not use a steel hammer — it will deform the punch over time. One firm strike beats two soft ones for a clean impression.
How do I keep the punch sharp?
Polished punches stay sharp for thousands of strikes if you are hitting cleanly on a flat block. If the face starts blurring impressions, polish lightly with 600-grit emery, then a buffing mop on a polishing motor. Replace before the face deforms further.
Drop your email for a WELCOME5 code — £5 off orders over £30, plus monthly bench-tested tool picks and buying guides from our Birmingham workshop. About one email a month, no spam.
Almost there
Use code WELCOME5 at checkout
£5 off your first order over £30. Check your inbox and confirm your subscription to join the monthly Bench Journal.
Cookies. Essential cookies keep the shop running; with your consent we also use analytics & personalisation cookies to improve it.
Privacy policy · change anytime in the footer.
Maker's Mark Stamp — 5.0 mm Five-Pointed Star, Hardened Steel Design Punch, 60 HRC £7.99
Dapping & Doming Block — 1 x Heavy Duty Brass, 2.0 Inch Metal Shaping Tool for Beading £29.99
Stamp Safety Block, Wooden, 4.1 × 4.1 × 4.1 cm — for Round & Square Shank Stamps £7.99
Forming Stake No 3, Double Ended 9 Inch — Polished Hardened Steel, Synclastic & Anticlastic £29.99
