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Carat Hunter · Where to buy diamonds

Where to buy a 0.5ct natural radiant diamond

Every retailer in our index stocking this size and shape, 64 of them, across 29,512 current listings.

Updated October 29, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

29,512

Retailers carrying

64

Median confirmed price

£564

Grade combinations

36

Certificate mix:GIA 26,115 · IGI 815 · HRD 4

What it actually costs

Half of these diamonds are listed between £451 and £850 (as of October 29, 2026).

Lower 10% £366Median £564Upper 10% £1,445

Middle half listed between £451 to £850

Certificated stones with a recently confirmed price only, 4,794 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

137%

Typical difference

£736

Stones compared

3,044

Across 3,044 stones of this size and shape carried by more than one retailer, the dearest listing sits 137% above the cheapest for the identical certificated diamond, a typical gap of £736. That gap is what comparing before you buy avoids.

Every retailer that stocks this spec

Ranked by active inventory count. Selection is mechanical, not editorial.

  1. 1Rare Carat3,275 in stock
    United States·Founded 2016·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  5. 5NZ Jewellers1,158 in stock
    New Zealand·Founded 2006·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  6. 6Brilliance1,021 in stock
    United States·Founded 2002·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Brilliance
  7. 7

    GemTrove

    982 in stock
    AU
    Terms not yet verified
  8. 8ZCOVA980 in stock
    Malaysia·Founded 2015·Ships to United Kingdom
    Terms not yet verified
    Visit ZCOVA
Show 15 more retailers
  5. 15Aurelinne760 in stock
    United States·Founded 2021·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Aurelinne
  7. 17Yorxs732 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs
  8. 18Moon Ocean721 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Moon Ocean
  10. 20Allurez681 in stock
    United States·Founded 2010·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Allurez
  11. 21

    The Perfect Carat

    667 in stock
    US
    Terms not yet verified
  14. 24B2C Jewels586 in stock
    United States·Founded 2004·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  15. 25RockHer533 in stock
    United States·Founded 2016·40-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit RockHer

Stock counts are updated daily. Founded and shipping details come from public sources. Return terms are our summary of each retailer's own policy page, dated per retailer above. Retailers change their terms, so check the retailer's own returns and shipping pages before you buy.

18 of the 25 retailers ship to United Kingdom. 7 do not.

Narrow it down by grade

Each combination below has its own page with the retailers that stock exactly that grade.

D VS11,817 · 57rE VS21,534 · 53rH VVS11,504 · 50rD VVS21,478 · 53rE VVS11,440 · 54rD VVS11,420 · 54rF VS11,355 · 55rE VS11,346 · 52rE VVS21,302 · 52rG VVS11,265 · 55rF VVS11,207 · 58rF VVS21,204 · 53rD VS21,188 · 53rG VS11,163 · 53rF VS21,091 · 56rH VVS21,013 · 52rG VS2945 · 52rG VVS2837 · 51rH VS1814 · 54rI VVS1745 · 45rH VS2657 · 50rI VS1635 · 45rI VVS2560 · 41rG IF525 · 49rI VS2473 · 46rD IF447 · 47rH IF395 · 49rF IF371 · 42rE IF323 · 40rI IF278 · 36rD FL41 · 24rG FL33 · 7rI FL32 · 20rF FL28 · 10rE FL25 · 4rH FL21 · 6r

Stones at this spec now

Current examples carried by more than one retailer, so the comparison is real. Prices shown in USD.

What this spec means

  • Radiant: a rectangular brilliant cut that combines the emerald outline with round-style faceting.
  • Natural: mined diamonds with the certification, provenance and resale profile traditional buyers expect.

Frequently asked

How much do retailers differ on the same diamond?

Across 3,044 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 137%, about £736.

Can I see retailers for one exact grade?

Yes. Each of the 36 colour and clarity combinations above has its own page listing the retailers that stock exactly that grade.

Does Carat Hunter earn commission from these retailers?

No. We earn zero affiliate revenue from any retailer in our index.

How fresh is this data?

Listings refresh as we re-read each retailer, most of them every day. Static facts about each retailer refresh weekly.

How is the retailer ranking calculated?

Strictly by active inventory count for this exact spec. The retailer carrying the most stones at the spec ranks first. There is no editorial input, weighting or affiliate consideration.

Why do you not show per-retailer prices on this page?

Prices vary per stone, not per store. Click through to any matched diamond and you will see every retailer's price on the exact same physical stone, which is the meaningful comparison.