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Carat Hunter · Where to buy diamonds

Where to buy a 0.5ct lab-grown round diamond

Every retailer in our index stocking this size and shape, 58 of them, across 364,303 current listings.

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

The market at this size and shape

Active listings

364,303

Retailers carrying

58

Median confirmed price

£136

Grade combinations

32

Certificate mix:IGI 346,230 · GCAL 884 · GIA 817 · HRD 418 · AGS 6

What it actually costs

Half of these diamonds are listed between £106 and £233 (as of October 29, 2026).

Lower 10% £78Median £136Upper 10% £319

Middle half listed between £106 to £233

Certificated stones with a recently confirmed price only, 41,495 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

402%

Typical difference

£547

Stones compared

30,058

Across 30,058 stones of this size and shape carried by more than one retailer, the dearest listing sits 402% above the cheapest for the identical certificated diamond, a typical gap of £547. 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.

  6. 6B2C Jewels23,309 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
  7. 7NZ Jewellers17,070 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
  9. 9Aurelinne16,192 in stock
    United States·Founded 2021·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Aurelinne
  10. 10Yorxs15,669 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs
Show 15 more retailers
  1. 11Rare Carat14,903 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
  2. 12

    The Perfect Carat

    14,516 in stock
    US
    Terms not yet verified
  6. 16Cape Diamonds8,313 in stock
    South Africa·Founded 2005·7-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds

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.

15 of the 25 retailers ship to United Kingdom. 10 do not.

Narrow it down by grade

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

D VVS2126,384 · 44rD VS161,784 · 42rD VVS160,229 · 45rE VVS226,692 · 41rE VS119,894 · 39rD IF15,103 · 39rE VVS114,750 · 40rD FL11,507 · 31rD VS211,139 · 40rE VS24,106 · 35rF VVS23,210 · 37rE IF2,223 · 40rF VS12,001 · 35rF VVS11,411 · 39rF VS2522 · 29rG VVS2464 · 32rI VS2351 · 26rE FL347 · 30rF IF340 · 36rH VVS2297 · 27rG VVS1268 · 28rI VS1261 · 23rG VS1203 · 27rG VS2138 · 23rH VS1130 · 26rI VVS2117 · 24rG IF93 · 25rI VVS186 · 23rH VS273 · 21rF FL66 · 21rH IF61 · 25rH VVS145 · 21r

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

  • Round: the most common cut, with the highest light return per carat.
  • Lab-grown: chemically identical to natural diamonds, typically at least 90% less than a comparable natural cohort from 1 carat up.

Frequently asked

How much do retailers differ on the same diamond?

Across 30,058 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 402%, about £547.

Can I see retailers for one exact grade?

Yes. Each of the 32 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.