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Carat Hunter · Where to buy diamonds

Where to buy a 1.5ct lab-grown princess diamond

Every retailer in our index stocking this size and shape, 73 of them, across 100,326 current listings.

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

The market at this size and shape

Active listings

100,326

Retailers carrying

73

Median confirmed price

NZ$579

Grade combinations

44

Certificate mix:IGI 91,220 · GCAL 2,998 · GIA 1,565 · AGS 10 · HRD 8

What it actually costs

Half of these diamonds are listed between NZ$444 and NZ$1,035 (as of November 7, 2026).

Lower 10% NZ$399Median NZ$579Upper 10% NZ$2,459

Middle half listed between NZ$444 to NZ$1,035

Certificated stones with a recently confirmed price only, 7,771 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. 1Carbon Sparkle5,634 in stock
    United States·GCAL, GIA, IGI·21-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, September 2, 2026
    Visit Carbon Sparkle
  2. 2

    The Perfect Carat

    5,456 in stock
    US·GCAL, GIA, IGI
    Terms not yet verified
  4. 4NZ Jewellers5,123 in stock
    New Zealand·Founded 2006·GCAL, GIA, IGI·30-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  5. 5Rare Carat5,019 in stock
    United States·Founded 2016·GCAL, GIA, IGI·30-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  6. 6Aurelinne4,635 in stock
    United States·Founded 2021·GCAL, GIA, IGI·Ships to New Zealand
    Terms not yet verified
    Visit Aurelinne
  9. 9Adiamor3,657 in stock
    United States·Founded 1999·GCAL, GIA, IGI
    Terms not yet verified
    Visit Adiamor
Show 63 more retailers
  1. 11B2C Jewels3,515 in stock
    United States·Founded 2004·AGS, GIA, IGI·30-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  10. 20Yorxs2,463 in stock
    Germany·Founded 2011·AGS, GIA, IGI
    Terms not yet verified
    Visit Yorxs
  11. 21Cape Diamonds2,285 in stock
    South Africa·Founded 2005·GIA, IGI·7-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  13. 23

    Luvansh

    1,997 in stock
    US
    Terms not yet verified
  15. 25

    Steven Stone

    1,722 in stock
    UK·GCAL, GIA, IGI
    Terms not yet verified
  20. 30

    Reeds

    1,101 in stock
    US·GCAL, IGI
    Terms not yet verified
  21. 31RockHer1,058 in stock
    United States·Founded 2016·GIA, IGI·Ships to New Zealand
    Terms not yet verified
    Visit RockHer
  22. 32

    SJ Gems

    770 in stock
    ZA·GIA, IGI
    Terms not yet verified
  28. 38Blue Nile623 in stock
    United States·Founded 1999·GCAL, GIA, IGI·Ships to New Zealand
    Terms not yet verified
    Visit Blue Nile
  31. 41GemsNY399 in stock
    United States·Founded 1988·GCAL, GIA, IGI·Ships to New Zealand
    Terms not yet verified
    Visit GemsNY
  33. 43Allurez367 in stock
    United States·Founded 2010·IGI·Ships to New Zealand
    Terms not yet verified
    Visit Allurez
  34. 44Jared361 in stock
    United States·Founded 1993·AGS, GCAL, GIA, IGI
    Terms not yet verified
    Visit Jared
  37. 47Zales326 in stock
    United States·Founded 1924·AGS, GCAL, GIA, IGI
    Terms not yet verified
    Visit Zales
  38. 48

    deBebians

    317 in stock
    US·IGI
    Terms not yet verified
  39. 49

    Keyzar

    313 in stock
    US·GIA, IGI
    Terms not yet verified
  43. 53

    USA Jewels

    188 in stock
    US·GCAL, IGI
    Terms not yet verified
  44. 54

    Liori Diamonds

    163 in stock
    US·GIA, IGI
    Terms not yet verified
  50. 60ZCOVA51 in stock
    Malaysia·Founded 2015·IGI·Ships to New Zealand
    Terms not yet verified
    Visit ZCOVA
  51. 6125karats43 in stock
    United States·Founded 2008·IGI·60-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, June 15, 2026
    Visit 25karats
  54. 64

    Laura Preshong

    16 in stock
    US·GCAL
    Terms not yet verified
  55. 65VRAI9 in stock
    United States·Founded 2014
    Terms not yet verified
    Visit VRAI
  56. 66

    Robbins Brothers

    8 in stock
    US·IGI
    Terms not yet verified
  57. 67

    Washington Diamond

    7 in stock
    US·GIA, IGI
    Terms not yet verified
  59. 69

    Whiteflash

    2 in stock
    US·GIA
    Terms not yet verified
  60. 70

    GemTrove

    1 in stock
    AU·IGI
    Terms not yet verified
  61. 71

    Lauren B

    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.

31 of the 57 retailers with shipping details ship to New Zealand. 26 do not. 16 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.

E VVS220,329 · 59rE VS116,701 · 61rD VVS215,086 · 59rD VS112,464 · 62rF VVS25,325 · 59rD VVS14,923 · 54rE VVS14,333 · 54rF VS14,104 · 57rE VS22,918 · 54rG VS12,072 · 52rG VVS21,914 · 50rD VS21,841 · 46rF VS21,303 · 51rF VVS11,300 · 51rD IF1,078 · 48rG VS2826 · 39rD FL622 · 38rE SI1423 · 36rE IF388 · 44rH VS1357 · 38rF SI1268 · 38rH VVS2265 · 35rG VVS1256 · 33rD SI1187 · 33rH VS2187 · 34rG SI1114 · 29rE FL74 · 25rH SI164 · 22rI SI163 · 16rF IF54 · 28rK VS247 · 15rI VS244 · 17rJ VS243 · 15rF SI241 · 27rI VVS239 · 20rE SI233 · 18rF FL32 · 22rG SI232 · 19rI VS130 · 16rD SI228 · 22rJ SI127 · 15rH VVS126 · 7rJ VS120 · 17rK SI110 · 10r

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 44 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.