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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, 48 of them, across 24,944 current listings.

Updated October 30, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

24,944

Retailers carrying

48

Median confirmed price

£186

Grade combinations

25

Certificate mix:IGI 23,464 · GCAL 101 · GIA 1

What it actually costs

Half of these diamonds are listed between £116 and £259 (as of October 30, 2026).

Lower 10% £85Median £186Upper 10% £358

Middle half listed between £116 to £259

Certificated stones with a recently confirmed price only, 2,093 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

390%

Typical difference

£572

Stones compared

1,522

Across 1,522 stones of this size and shape carried by more than one retailer, the dearest listing sits 390% above the cheapest for the identical certificated diamond, a typical gap of £572. 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 Carat1,835 in stock
    United States·Founded 2016·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  3. 3Aurelinne1,595 in stock
    United States·Founded 2021·30-day returns·Ships to Ireland
    Terms not yet verified
    Visit Aurelinne
  7. 7NZ Jewellers1,241 in stock
    New Zealand·Founded 2006·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  9. 9

    The Perfect Carat

    1,167 in stock
    US
    Terms not yet verified
  10. 10B2C Jewels1,061 in stock
    United States·Founded 2004·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
Show 15 more retailers
  2. 12Yorxs903 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs

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.

13 of the 25 retailers ship to Ireland. 12 do not.

Narrow it down by grade

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

D VVS16,906 · 45rD VVS25,997 · 43rD VS12,791 · 40rE VVS22,152 · 41rE VVS11,839 · 43rE VS11,312 · 38rD IF1,255 · 39rF VVS2599 · 34rD VS2496 · 34rE IF401 · 37rE VS2323 · 29rF VS1220 · 34rG VVS2129 · 25rF VS2103 · 26rG VS190 · 22rF VVS188 · 33rD FL47 · 20rH VVS246 · 23rG VS229 · 16rE FL26 · 19rG VVS122 · 19rF IF20 · 20rH VVS115 · 15rH VS113 · 12rI VVS213 · 13r

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?

Across 1,522 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 390%, about £572.

Can I see retailers for one exact grade?

Yes. Each of the 25 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.