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Vintage Ringsvintage, antique & second hand

Half Carat Diamond Rings for Sale

There are 2,702 half carat diamond rings for sale on eBay UK right now (77 of them at auction). Half of the Buy It Now rings are priced under £886 including postage; the middle half sit between £575 and £1,490, and the cheapest starts at £87. Most are Art Deco (3%), Victorian (1%) and Edwardian (1%); and the usual metals are 18ct gold and Platinum. 408 are priced at least 30% under similar rings by sellers with a good feedback record: tick "Good buys only" to see them.

2,702rings today
£886typical asking price
£87cheapest
408good buys

2,702 rings on eBay UK now

What half carat diamond rings cost today

Asking prices of the Buy It Now half carat diamond rings on eBay UK today, including postage. "Typical" is the middle price; the range is the middle half of rings, so a quarter are cheaper and a quarter dearer.

By era

EraRingsTypicalMiddle half
Art Deco87£1,503£835–£2,450
Victorian34£1,500£796–£2,546
Edwardian26£1,749£900–£2,250
1980s–90s24£1,723£500–£2,250
Retro (1940s–50s)21£2,250£1,925–£2,450
1960s–70s10£1,232£895–£1,650

By metal

MetalRingsTypicalMiddle half
18ct gold1,209£925£695–£1,412
9ct gold459£425£325–£568
Platinum427£1,369£936–£2,075
14ct gold102£864£576–£1,375
Silver10£141£114–£149

Buying a diamond ring

Diamonds in vintage rings are usually older cuts: old mine (cushion shaped, made before about 1890), old European (round, with a small table and a visible culet, roughly 1890–1930), rose cut (flat-bottomed, domed facets) and transitional cuts. They sparkle more softly than a modern brilliant, and many buyers prefer them for that. Weights in titles are often estimates: a certificate or a jeweller's valuation is worth more than a seller's guess.

How we compare vintage rings

Vintage and antique rings are one-offs, so price comparisons need care: two rings of the same era, stone and metal can differ a lot in stone quality and condition. We compare each ring only with rings that share its era group, main stone, metal and style, and, for diamond solitaires and three stone rings, its carat weight.

Price history

We started recording the typical asking price of half carat diamond rings on 13 November 2026. The chart fills in day by day: come back in a week to see which way prices are moving.

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Before you buy

  • Zoom into the hallmark and the claws in the photos.
  • Ask how the stones were tested, and for a valuation or certificate if there is one.
  • Check the returns policy: eBay's Money Back Guarantee covers items not as described.
  • Most rings can be resized; full eternity rings usually can't.

Read the full buying guide

More rings like these

1 carat diamond rings1,932 today · typical £2,000 2 carat diamond rings582 today · typical £3,950

Questions buyers ask

How much do half carat diamond rings cost?

Today the typical (median) asking price of the 2,625 Buy It Now half carat diamond rings on eBay UK is £886 including postage. A quarter are under £575 and a quarter over £1,490. Price depends most on the main stone, the metal and, for diamonds, the carat weight: see the price guide on this page.

Where can I buy half carat diamond rings in the UK?

eBay UK has one of the biggest choices: 2,702 half carat diamond rings listed today from antique dealers, jewellers and private sellers. This page shows all of them in one place, with the fakes, "vintage style" copies and damaged rings filtered out and each ring priced against similar ones.

Are half carat diamond rings on eBay genuine?

Most are, but not all. We leave out any listing that calls itself "vintage style", "inspired" or a reproduction, and anything with cubic zirconia, moissanite, plated or "gold tone" metal. Before you buy, look for a clear hallmark photo, ask how any stone was tested, and prefer sellers with a returns policy and a long feedback record. The green shield on a ring means a Top Rated seller or one with 98%+ positive feedback from 50+ buyers.

Can a vintage ring be resized?

Usually, yes: a jeweller can make most plain-shanked rings one or two sizes bigger or smaller. Full eternity rings, rings with stones all round, and some very old or thin shanks are harder or impossible to resize. Filter by UK size on this page to find rings that already fit, and check our ring size guide.

How do you know a ring is a good price?

We compare each Buy It Now ring with similar rings listed today: the same group of era, main stone, metal and style, and for diamond solitaires and three stone rings the same carat band. A "Good price" ring is at least 30% under the typical price of at least eight similar rings, from a seller with a good record. Anything 50% or more under is flagged "check carefully" instead. How we price rings.