Check Jewelry Construction Before You Pay
- Trinket File
- Buying
- 20 Jan, 2026
Most attention in a jewelry purchase goes to how a piece looks at arm’s length, which is the part the maker designed for. What decides whether it still looks right in five years is construction, and nearly all of it is visible if you turn the piece over and look closely.
You don’t need special equipment: reading glasses, a phone camera in macro mode or a cheap 10x loupe will do. You do need to slow down and get over feeling slightly rude about handling the piece.
Start at the back
A maker who cares about finish cares about the surfaces nobody photographs. Turn a ring over and look inside the shank: smooth and evenly polished, not rough, pitted or gray in patches. On a pendant or brooch, patches of unpolished metal, sharp edges where a casting sprue was cut, or dull gray areas usually mean rushed finishing.
The inside of a shank also tells you its history: a seam from a resize, a different color where metal was added, or a flat spot from years of wear.
Solder joins
Solder is where joints most often fail or look wrong.
On gold, a good joint disappears into the surrounding metal. Look for a visible line, a dip or a slightly different color; gold solders come in different colors and melting points, and a mismatch shows under close light. On silver, a joint can show as a faint gray line, because silver solder tarnishes at a slightly different rate from the sterling around it.
Look too for solder spread onto the surface, pitted or spongy metal around the join, and signs of repeated reheating, which makes a joint brittle. Never test a joint by bending it. You’re looking for evidence, not applying force.
Settings
The setting is doing structural work, and it’s where a lot of jewelry eventually fails.
Prongs. Similar thickness and length, tips rounded not worn flat, sitting evenly over the stone. A prong filed down to tidy a stone is weaker than the original. Don’t press hard on any stone; if it moves gently under a fingernail, treat it as loose.
Bezels. Metal pressed evenly over the stone’s edge with no gaps. A bezel protects edges, good for daily wear, but hides what’s underneath, chips included, so look through the top under magnification.
Channels. Stones level and at consistent height between two rails. Check the rails aren’t worn thin and no stone sits lower than its neighbors. Channels are hard to rebuild, so a worn one matters.
Pavé and grain settings. Many small metal beads pushed over tiny stones. Look for flattened, missing or tilted beads and any stone out of line.
On a ring with stones all the way around, the setting also limits later work: a full eternity ring usually can’t be resized without rebuilding the setting. Know that before you buy.
Clasps, hinges and findings
Clasps are the most-used moving part and usually the first to need replacing.
| Clasp | What good looks like | Watch for |
|---|---|---|
| Lobster | Opens smoothly, snaps shut under light spring | The small joint where the lever attaches; that’s where they break |
| Spring ring | Common on fine chains | Weaker than it looks; use a lobster for anything beyond a small charm |
| Box and tongue | Engages without coaxing, working safety catch | A tired flat spring |
| Toggle | Secure while the bar sits across the ring | Works loose with movement |
| Magnetic | Easy on and off | Opens under a firm pull or knock; skip for anything you’d hate to lose |
Then check what the clasp connects to. A butted jump ring can pull open; a soldered or fused one is stronger. On bracelets and bangles, work the hinge through its full travel, feel for grinding and check the pin doesn’t stick out. On brooches, a rollover catch with a safety beats an open C hook. On earrings, check where the post joins and whether the backs still grip.
Chains and links
Run the chain through your fingers and look at individual links. A worn chain shows stretched links and gaps where the wire has opened, and fine chains usually fail at one weak link rather than everywhere at once. On hollow rope or curb chains, gentle finger pressure dents the links. That’s a cost trade-off, not a fault, but it means no heavy pendant and no tugging.
How to check a piece in a store
Ask to take it to a window, away from warm spotlights that hide scratches and make everything glow. Use a loupe or phone macro on the back, the prong tips and the joint between clasp and chain. Run a fingernail gently along the setting’s edges and around the inside of a ring; snag points catch sweaters later.
Then find the hallmark or fineness stamp and photograph it. As our guide to reading the marks on a piece explains, a stamp tells you what a piece is declared to be and where it was marked. In the UK, for instance, gold over 1 g, silver over 7.78 g and platinum over 0.5 g must be hallmarked to be sold as precious metal, per the Assay Office dealer’s notice, so a heavy UK piece with only a bare number deserves a question.
Questions to ask
- Has it been repaired, resized or re-polished? How many times?
- Is the plating original, or has it been re-plated?
- Can you photograph the hallmark, and confirm the weight in grams in writing?
- Buying online, ask for close-ups of the back, hallmark and clasp before paying.
What you can’t check yourself
Construction is visible; identity and composition mostly aren’t. Whether metal matches its stamp takes an assay office or a jeweler with X-ray fluorescence (XRF) equipment. Whether a stone is natural, synthetic or a simulant, or has been treated or filled, takes a gemologist or a lab.
That’s no reason to avoid buying. It’s a reason to inspect what you can see, ask about the rest and get a specialist opinion before spending money that would hurt if the answer disappoints.
