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Carat Hunter · Where to buy diamonds

Where to buy a 0.5ct lab-grown princess diamond

Every retailer in our index stocking this size and shape, 59 of them, across 24,062 current listings.

Updated November 7, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

24,062

Retailers carrying

59

Median confirmed price

€204

Grade combinations

31

Certificate mix:IGI 22,391 · GCAL 96 · GIA 3

What it actually costs

Half of these diamonds are listed between €138 and €307 (as of November 7, 2026).

Lower 10% €103Median €204Upper 10% €431

Middle half listed between €138 to €307

Certificated stones with a recently confirmed price only, 1,976 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

As of November 7, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 21% more for natural ones (the median across stones listed by two or more retailers). Comparing shows you the cheapest of the retailers listing the same stone.

Every retailer that stocks this spec

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

  1. 1Rare Carat1,930 in stock
    United States·Founded 2016·GIA, IGI·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  6. 6

    The Perfect Carat

    1,342 in stock
    US·IGI
    Terms not yet verified
  7. 7NZ Jewellers1,225 in stock
    New Zealand·Founded 2006·IGI·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
Show 49 more retailers
  1. 11B2C Jewels940 in stock
    United States·Founded 2004·IGI·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  7. 17Cape Diamonds567 in stock
    South Africa·Founded 2005·IGI·7-day returns·Ships to Ireland
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  8. 18

    SkyGem

    542 in stock
    AU·IGI
    Terms not yet verified
  12. 22

    Luvansh

    340 in stock
    US
    Terms not yet verified
  19. 29

    Steven Stone

    257 in stock
    UK·IGI
    Terms not yet verified
  25. 35

    SJ Gems

    131 in stock
    ZA·IGI
    Terms not yet verified
  26. 36Allurez127 in stock
    United States·Founded 2010·IGI·Ships to Ireland
    Terms not yet verified
    Visit Allurez
  29. 39GemsNY112 in stock
    United States·Founded 1988·IGI·Ships to Ireland
    Terms not yet verified
    Visit GemsNY
  31. 41

    Reeds

    91 in stock
    US·IGI
    Terms not yet verified
  33. 43

    deBebians

    79 in stock
    US·IGI
    Terms not yet verified
  34. 44

    Liori Diamonds

    74 in stock
    US·IGI
    Terms not yet verified
  36. 46

    Keyzar

    57 in stock
    US·IGI
    Terms not yet verified
  39. 49Zales18 in stock
    United States·Founded 1924·IGI
    Terms not yet verified
    Visit Zales
  42. 52Jared9 in stock
    United States·Founded 1993·IGI
    Terms not yet verified
    Visit Jared
  44. 54ZCOVA4 in stock
    Malaysia·Founded 2015·IGI·Ships to Ireland
    Terms not yet verified
    Visit ZCOVA
  45. 55

    Diamond Culture

    1 in stock
    HK·IGI
    Terms not yet verified
  46. 56

    Diamovida

    1 in stock
    CA·IGI
    Terms not yet verified
  48. 58

    Robbins Brothers

    1 in stock
    US·IGI
    Terms not yet verified
  49. 59

    USA Jewels

    1 in stock
    US
    Terms not yet verified

Stock counts reflect current listings. 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.

24 of the 45 retailers with shipping details ship to Ireland. 21 do not. 14 retailers have not published any shipping details.

Narrow it down by grade

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

D VVS16,201 · 47rD VVS25,706 · 45rD VS12,690 · 38rE VVS22,159 · 42rE VVS11,729 · 45rD IF1,283 · 42rE VS11,258 · 39rF VVS2627 · 39rD VS2512 · 33rE IF432 · 40rE VS2338 · 30rF VS1234 · 36rG VVS2126 · 25rD SI1123 · 22rF VVS1103 · 36rF VS2101 · 26rG VS188 · 22rD FL63 · 24rH VVS248 · 24rG SI130 · 19rG VS230 · 17rE FL27 · 19rG VVS120 · 18rI VVS217 · 13rH VS116 · 15rH VVS115 · 15rE SI113 · 13rH SI113 · 13rF IF12 · 12rE SI210 · 10rF SI110 · 9r

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

  • Princess: a square brilliant cut, second only to round in popularity.
  • 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?

As of November 7, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 21% more for natural ones (the median across stones listed by two or more retailers). Comparing shows you the cheapest of the retailers listing the same stone.

Can I see retailers for one exact grade?

Yes. Each of the 31 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.