Buying Guide
Buying jewellery should feel certain, not risky. This hub explains how to read hallmarks and fineness marks, tell solid from plated, judge genuine quality, size a gift without asking, and back every purchase with the right paperwork. Canonical terms link out to their full definitions so you can go as deep as you like.
Quick buyer's checklist
| Check | What good looks like |
|---|---|
| Hallmark / fineness | Clear stamp: 925, 375, 585, 750 or 950 as claimed |
| Finish | Even, clean, no glue or rough edges |
| Clasp / setting | Closes crisply; stones held securely |
| Provenance | Named brand, warranty, branded packaging |
| Price | In line with metal, stones and craftsmanship |
Hallmarks & Quality Marks
Understanding Hallmarks
A UK hallmark is a legal stamp guaranteeing the precious-metal content of a piece -- not a maker's logo or decoration.
What a hallmark proves
A hallmark is applied by an independent Assay Office after the metal is tested. It certifies the metal is at least the fineness it claims. By law, gold, silver, platinum and palladium items above set weights must be hallmarked to be sold as precious metal in the UK. See UK hallmarking for the full standard.
Reading the marks
A full UK hallmark has three compulsory parts: the sponsor's (maker's) mark, the fineness number (such as 925 for sterling silver or 750 for 18ct gold), and the Assay Office mark (the leopard's head for London, an anchor for Birmingham). Optional date letters and pictorial fineness marks may also appear.
Fineness Numbers Explained
Three-digit fineness numbers state how much pure precious metal is in a piece, in parts per thousand.
Gold, silver and platinum
925 means 92.5% pure silver (sterling silver). For gold, 375 is 9ct, 585 is 14ct, 750 is 18ct and 999 is pure. Platinum is usually 950. The higher the number, the more pure precious metal -- and usually the higher the value.
Why it matters at purchase
Two rings can look identical but carry very different fineness. Checking the number protects you from paying gold prices for a lower-carat or plated piece. If a UK item is sold as solid gold or silver but carries no fineness mark above the exemption weight, ask why before buying.
Value & Authenticity
Plated vs Solid -- Buyer's View
Plated jewellery wears a thin precious layer over a base metal; solid jewellery is the precious metal throughout. Both have a place -- the key is knowing which you are buying.
What you are paying for
Solid sterling silver or solid gold holds intrinsic metal value and lasts for decades. Quality plated pieces -- such as rhodium-plated silver or 18ct gold-plated brass -- deliver the look at a lower price but the finish is a wear layer, not the core. Our gold-plated vs vermeil guide sets out the tiers.
Honest expectations
A plated piece is not a fake -- it is a different product at a different price. Expect the finish to need replating over years of heavy wear. Brands like Nomination and Coeur de Lion mix solid and plated elements; the listing should always state which.
Spotting Genuine Quality
Quality shows in the finish, the weight, the clasp and the setting -- details that are hard to fake cheaply.
What to inspect
Look for a clean, even finish with no rough edges or visible glue, a clasp that closes crisply, and stones held securely in a tidy setting. A satisfying weight for the size usually signals solid metal rather than hollow or filled construction.
Brand and provenance
Established brands such as Clogau, Kit Heath and Thomas Sabo back their pieces with hallmarks, branded packaging and warranties. Provenance -- a named maker, a guarantee, a recognisable collection -- is itself a quality signal. Our is it real guide covers quick at-home checks.
Who makes it:
Who backs it: Clogau, Kit Heath and Thomas Sabo supply hallmarks, branded boxes and warranties as standard. Browse Clogau, Kit Heath and Thomas Sabo.
Authentication & Certificates
Certificates, hallmarks and brand markings let you verify a piece is what it claims to be.
Documents that matter
For branded jewellery, keep the receipt, warranty card and branded box. For pieces with significant stones, a certificate from a recognised laboratory records the stone's properties. Our authentication guide explains what to ask for.
Verifying a brand piece
Genuine branded jewellery carries consistent logo stamping, correct hallmarks and matching packaging. Coeur de Lion, Nomination and UNOde50 each have recognisable signatures. If markings are missing, misspelt or inconsistent, treat the piece with caution.
Who makes it:
Recognisable signatures: Nomination's composable links, Coeur de Lion's colour-bonded crystals and UNOde50's hand-finished metalwork are hard to imitate. See Nomination, Coeur de Lion and UNOde50.
Gifting & Sizing
Gifting a Ring Without Asking
You can size a surprise ring gift using a ring they already wear, a printed sizer, or a safe default.
Borrow a ring
The simplest method is to borrow a ring they wear on the target finger and measure its internal diameter against a size chart. Our how to size a ring at home guide shows the exact steps.
Safe defaults and resizing
If you cannot measure, UK women's rings most commonly fall around L-N and men's around T-V. Many bands can be resized after purchase, so choosing a resizable style lowers the risk. Avoid eternity and tension settings for surprises, as they are hard to resize.
Choosing Necklace & Bracelet Length
Length decides where a necklace sits and how a bracelet fits -- pick by neckline, layering plan and wrist size.
Necklace lengths
A 16-inch necklace sits at the base of the neck, 18 inches rests on the collarbone, and 20-24 inches drops onto the chest for layering. See sizing and measurements for the full length map and where each one lands.
Bracelet and bangle fit
Bracelets are usually 7-7.5 inches for women and 8-8.5 for men, with a little ease so they move. Bangles are sized by internal diameter and must pass over the hand. A gift bracelet with an extender chain forgives an uncertain wrist size.
Budgeting by Occasion
Match the piece to the moment -- everyday treats, milestone gifts and keepsakes each suit different price tiers.
Everyday vs milestone
For everyday gifts, sterling silver and quality plated pieces from Olivia Burton or Kit Heath offer style at an accessible price. For milestones -- a significant birthday, an anniversary -- solid silver or gold, or a brand with strong meaning like Clogau Welsh gold, carries lasting value.
Where the money goes
Price reflects metal weight and purity, stone quality, brand and craftsmanship. A higher budget buys solid metal, better stones and stronger provenance. Decide which of those matters most to the person, then spend there.
Buying with Confidence
Warranties, Returns & Aftercare
A good jeweller backs a piece with a warranty, a clear returns policy and aftercare such as cleaning or replating.
What to expect
Reputable brands offer a manufacturing warranty -- typically covering faults, not wear -- and replating or repair services. Check the returns window and whether earrings (for hygiene) are excluded. Aftercare such as a replate keeps finishes bright over time.
Keep your paperwork
Retain receipts, warranty cards and certificates. They support warranty claims, future valuations and insurance. For care between services, our care and cleaning hub keeps pieces in warranty condition.
Buying for Sensitive Skin
If the wearer reacts to certain metals, choose nickel-safe options such as sterling silver, solid gold or surgical-grade fittings.
Common triggers
Most metal allergies are a reaction to nickel, often found in cheaper base alloys and some earring posts. Sterling silver, solid 14ct/18ct gold, platinum and titanium are generally well tolerated. Our care hub covers daily wear for sensitive skin.
Earrings especially
Pierced ears are the most reaction-prone, so look for sterling silver, gold or stainless/surgical-steel posts. Quality rhodium plating also creates a barrier over the base metal, reducing contact.
Who makes it:
Skin-friendly picks: sterling silver and solid-gold ranges from Kit Heath and Clogau suit sensitive wearers. Browse Kit Heath and Clogau.
Avoiding Common Pitfalls
Most buying mistakes come from unclear descriptions, missing hallmarks and prices that look too good to be true.
Red flags
Be wary of solid-gold or solid-silver claims with no fineness mark, vague metal descriptions, missing brand markings, and prices far below the going rate. Genuine precious metal and recognised brands have a floor price set by metal and craftsmanship.
Buy from a known source
Buying from an established jeweller with hallmarked stock, branded packaging and a returns policy removes most risk. If a deal relies on pressure or a story rather than marks and paperwork, step back.
How Care Protects Value
Good aftercare keeps a piece looking and performing like new, protecting both its appearance and its resale value.
Routine that pays off
Regular gentle cleaning, safe storage and periodic professional checks prevent the wear that drags value down. Our care and cleaning hub and tarnish guide set out the routine by metal.
Service before it fails
Replating worn finishes, re-tipping worn prongs and restringing pearls before they break all cost less than replacing a piece. Treat aftercare as protecting an investment, not an optional extra.
Frequently asked questions
What does a UK hallmark guarantee?
It guarantees the precious-metal content of a piece, certified by an independent Assay Office. It is a legal stamp, not a maker's logo, and is required on gold, silver, platinum and palladium above set weights.
What does 925 mean on jewellery?
925 is the fineness mark for sterling silver -- 92.5% pure silver. It is one of the most common quality marks you will see and confirms the piece is solid sterling, not plated.
Is plated jewellery worth buying?
Yes, for the right reasons. Quality plated pieces give the look of gold or rhodium-bright silver at a lower price. Just expect the finish to need replating over years of heavy wear, and check the listing states it is plated.
How do I size a ring as a surprise gift?
Borrow a ring they already wear on the target finger and measure its internal diameter against a size chart, or choose a resizable band. Our how to size a ring at home guide shows the steps.
What necklace length should I buy?
16 inches sits at the neck base, 18 inches on the collarbone, and 20-24 inches on the chest for layering. Pick by neckline and whether they like to layer.
How can I tell if jewellery is good quality?
Look for a clean even finish, a crisp clasp, securely set stones, a solid weight for the size, and a hallmark or brand markings. Provenance -- a named brand and warranty -- is itself a quality signal.
Do I need a certificate when buying jewellery?
For branded pieces, keep the receipt, warranty card and box. For significant stones, ask for a laboratory certificate recording the stone's properties. Everyday pieces rely on the hallmark and brand markings.
What is the safest metal for sensitive skin?
Sterling silver, solid 14ct or 18ct gold, platinum and titanium are generally well tolerated. Most reactions are to nickel in cheap base alloys, so avoid unmarked low-cost metal, especially in earring posts.
Can most rings be resized?
Many plain bands can be resized up or down a couple of sizes. Eternity rings, tension settings and some patterned bands are difficult or impossible to resize, so choose those in the correct size.
How much should I spend on a jewellery gift?
Match the piece to the occasion. Everyday gifts suit accessible silver and plated pieces; milestones justify solid metal or a brand with strong meaning. Spend where it matters most to the person.
What are the warning signs of a bad purchase?
Solid-metal claims with no hallmark, vague metal descriptions, missing brand markings, and prices far below the going rate. Genuine precious metal and recognised brands have a price floor.
Does aftercare really protect value?
Yes. Regular cleaning, safe storage and timely repairs -- replating, re-tipping prongs, restringing pearls -- prevent the wear that lowers value, and cost far less than replacing a piece.