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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, 49 of them, across 24,220 current listings.

Updated November 6, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

24,220

Retailers carrying

49

Median confirmed price

$225

Grade combinations

31

Certificate mix:IGI 22,538 · GCAL 89 · GIA 3

What it actually costs

Half of these diamonds are listed between $154 and $345 (as of November 6, 2026).

Lower 10% $115Median $225Upper 10% $483

Middle half listed between $154 to $345

Certificated stones with a recently confirmed price only, 1,988 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

As of November 5, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 19% 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 United States
    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·Ships to United States
    Terms not yet verified
  7. 7NZ Jewellers1,227 in stock
    New Zealand·Founded 2006·IGI·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  10. 10B2C Jewels994 in stock
    United States·Founded 2004·IGI·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
Show 39 more retailers
  6. 16Cape Diamonds619 in stock
    South Africa·Founded 2005·IGI·7-day returns·Ships to United States
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  10. 20Adiamor333 in stock
    United States·Founded 1999·IGI·Ships to United States
    Terms not yet verified
    Visit Adiamor
  22. 32Allurez127 in stock
    United States·Founded 2010·IGI·Ships to United States
    Terms not yet verified
    Visit Allurez
  25. 35GemsNY112 in stock
    United States·Founded 1988·IGI·Ships to United States
    Terms not yet verified
    Visit GemsNY
  29. 39Shane Co43 in stock
    United States·Founded 1971·IGI·Ships to United States
    Terms not yet verified
    Visit Shane Co
  31. 41Zales18 in stock
    United States·Founded 1924·IGI·Ships to United States
    Terms not yet verified
    Visit Zales
  34. 44Jared9 in stock
    United States·Founded 1993·IGI·Ships to United States
    Terms not yet verified
    Visit Jared
  36. 46ZCOVA4 in stock
    Malaysia·Founded 2015·IGI·Ships to United States
    Terms not yet verified
    Visit ZCOVA
  37. 47

    Diamond Culture

    1 in stock
    HK·IGI
    Terms not yet verified
  38. 48

    Diamovida

    1 in stock
    CA·IGI
    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.

37 of the 46 retailers with shipping details ship to United States. 9 do not. 3 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 VVS16,284 · 45rD VVS25,791 · 43rD VS12,707 · 37rE VVS22,145 · 39rE VVS11,731 · 43rD IF1,268 · 40rE VS11,266 · 37rF VVS2629 · 37rD VS2511 · 33rE IF419 · 38rE VS2342 · 28rF VS1240 · 36rG VVS2127 · 25rD SI1123 · 22rF VVS1102 · 37rF VS2101 · 26rG VS188 · 22rD FL57 · 21rH VVS247 · 23rG VS231 · 17rG SI130 · 19rE 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 5, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 19% 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 color 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.