Priya Nair
Start With the Catch
The catch on the back of a brooch tells you more about its history than almost anything on the front. Before you look at the stones, turn the piece over and work the fastening two or three times. It should close with a firm, definite snap and hold when you tug it gently.
British brooches generally use one of four fastenings. The earliest is the simple C-catch, a plain hook that the pin rests inside; it does not lock, and that is entirely normal on a Victorian piece rather than a fault. From the late nineteenth century you find the trombone catch, a sliding tube that covers the pin end. The safety catch — a rollover fitting with a cup or bowl that the pin tip slots into — became standard by the early twentieth century and is the most secure for everyday wear. Later pieces sometimes use a simple rollover with no cup at all.
- Check for solder blobs or a catch in a slightly different metal colour, which usually signals an old repair.
- A C-catch on a heavy brooch means the pin can work its way loose; plan to wear it on a scarf or lapel rather than a coat.
- Replacing a broken catch is straightforward for a jeweller, but a modern replacement rarely matches the original and will be noticed by collectors.
The Pin Stem and Hinge
The pin should be straight, springy and long enough to pass through the fabric with room to spare. A common problem on older brooches is a pin that has been shortened after a break, leaving too little length to reach the cup properly. On a heavy brooch, a thin or short pin will droop and the piece will hang at an angle.
Look closely at the hinge, where the pin meets the body. There should be no wobble and no hairline cracks in the tube. Steel pins rust, and rust leaves pitting and dark staining on the back of the brooch — a useful clue that a piece has been stored somewhere damp. Test the pin tip on your fingertip: a blunt or hooked end will snag silk and fine knitwear.
Stones, Settings and Foil
Go over every stone individually. Gently press each one with the pad of your finger or the tip of a cocktail stick; any movement means the claws are worn or the setting has loosened. Bent claws, visible yellowish adhesive or bright lead solder around a stone all point to a previous repair, and these are the places where damage tends to spread.
Foil-backed paste is a particular issue in older costume jewellery. The foil behind the stone was there to add sparkle, but moisture eventually dulls it and the stone turns grey or nearly black. This cannot be polished away from the front; the stone has to come out and be refitted, which is rarely economical.
- Marcasite grains fall out easily — count them and check for gaps before you decide.
- Missing stones in an unusual shape, colour or size are very hard to match, so price that risk in.
- Enamel chips along an edge or a hairline crack will not improve, and invisible enamel restoration is specialist work.
- Seed pearls should look slightly irregular and feel faintly gritty against a tooth; smooth, perfectly round beads are usually imitation.
Metal, Hallmarks and Maker's Marks
In the UK, silver and gold items above certain weights must carry a hallmark: the maker's or sponsor's mark, the assay office mark, a standard mark and often a date letter. Look for 925 for sterling silver, or 375, 585, 750 and 916 for 9ct, 14ct, 18ct and 22ct gold. The assay marks themselves can help you date a piece — the leopard's head for London, the anchor for Birmingham, the crown or rose for Sheffield, the castle for Edinburgh.
Older standards are a useful dating tool. 15ct and 12ct gold were both abolished in 1932, so a 15ct mark places a brooch before that date. Silver-plated and rolled-gold pieces are often marked EPNS, gilt or gold-filled, and a magnet will pull sharply on nickel or steel but not on gold, silver or brass.
Be cautious of a hallmark that does not fit the style of the brooch, or one that looks stamped over an older mark. Country of origin stamps reading "England" or "Made in England" usually indicate a piece made for export after 1891.
Weight, Balance and Wearability
Hold the brooch in your palm. Anything above roughly 30 to 40 grams needs a substantial fabric to sit on — a wool coat or a tweed jacket, not a fine blouse. Balance matters as much as weight: the pin should sit across the widest part of the brooch, and the piece should not tip forward when pinned. A brooch that hangs badly will spend its life in a drawer.
Check any secondary fittings too. Convertible brooches with a loop at the top can be worn as pendants, but make sure that loop is firmly soldered. Screw fittings and double pins should grip without needing to be forced.
What to Check Before You Pay
Distinguish between wear you can live with and damage that will only worsen. Tarnish on silver cleans off with a soft cloth; green verdigris on base metal means active corrosion and can stain clothing. A replaced pin or re-plated surface reduces value for a collector but is perfectly fine if you simply want to wear and enjoy the piece.
Ask directly whether anything has been repaired, and confirm the returns policy. A sixty-second routine — catch, pin, hinge, every stone, the hallmark — will tell you most of what you need to know, and it will help you pay a fair price for a brooch you will actually wear.
