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Carat Hunter · Where to buy diamonds

Where to buy a 1ct lab-grown radiant diamond

Every retailer in our index stocking this size and shape, 68 of them, across 143,650 current listings.

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

The market at this size and shape

Active listings

143,650

Retailers carrying

68

Median confirmed price

NZ$834

Grade combinations

46

Certificate mix:IGI 133,879 · GIA 3,275 · GCAL 2,035 · HRD 60

What it actually costs

Half of these diamonds are listed between NZ$415 and NZ$1,069 (as of November 6, 2026).

Lower 10% NZ$327Median NZ$834Upper 10% NZ$1,293

Middle half listed between NZ$415 to NZ$1,069

Certificated stones with a recently confirmed price only, 25,056 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

As of November 6, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 20% 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.

  2. 2NZ Jewellers7,774 in stock
    New Zealand·Founded 2006·GCAL, GIA, GSI, IGI·30-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  4. 4Carbon Sparkle7,689 in stock
    United States·GCAL, GIA, GSI, IGI·21-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, September 2, 2026
    Visit Carbon Sparkle
  5. 5

    The Perfect Carat

    6,969 in stock
    US·GCAL, GIA, GSI, IGI
    Terms not yet verified
  6. 6Rare Carat6,875 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
  9. 9Aurelinne6,293 in stock
    United States·Founded 2021·GCAL, GIA, GSI, IGI·Ships to New Zealand
    Terms not yet verified
    Visit Aurelinne
Show 58 more retailers
  1. 11B2C Jewels4,981 in stock
    United States·Founded 2004·GIA, IGI·30-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  3. 13Adiamor4,559 in stock
    United States·Founded 1999·GCAL, GIA, IGI
    Terms not yet verified
    Visit Adiamor
  10. 20Yorxs3,126 in stock
    Germany·Founded 2011·GIA, IGI
    Terms not yet verified
    Visit Yorxs
  11. 21Cape Diamonds3,027 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
  23. 33GemsNY909 in stock
    United States·Founded 1988·GCAL, GIA, IGI·Ships to New Zealand
    Terms not yet verified
    Visit GemsNY
  26. 36Allurez740 in stock
    United States·Founded 2010·GIA, IGI·Ships to New Zealand
    Terms not yet verified
    Visit Allurez
  28. 38Blue Nile640 in stock
    United States·Founded 1999·GCAL, GIA, IGI·Ships to New Zealand
    Terms not yet verified
    Visit Blue Nile
  30. 40Jared476 in stock
    United States·Founded 1993·GCAL, GIA, IGI
    Terms not yet verified
    Visit Jared
  33. 43RockHer392 in stock
    United States·Founded 2016·GIA, IGI·Ships to New Zealand
    Terms not yet verified
    Visit RockHer
  34. 44Zales265 in stock
    United States·Founded 1924·GCAL, GIA, IGI
    Terms not yet verified
    Visit Zales
  39. 49

    Washington Diamond

    66 in stock
    US·GIA, IGI
    Terms not yet verified
  41. 51ZCOVA40 in stock
    Malaysia·Founded 2015·IGI·Ships to New Zealand
    Terms not yet verified
    Visit ZCOVA
  43. 5325karats31 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
  45. 55

    GemTrove

    18 in stock
    AU·IGI
    Terms not yet verified
  47. 57VRAI13 in stock
    United States·Founded 2014
    Terms not yet verified
    Visit VRAI
  50. 60

    Lauren B

    2 in stock
    US
    Terms not yet verified
  51. 61

    Whiteflash

    2 in stock
    US·IGI
    Terms not yet verified
  52. 62

    Diamovida

    1 in stock
    CA·IGI
    Terms not yet verified
  54. 64

    Good Old Gold

    1 in stock
    US·IGI
    Terms not yet verified
  55. 65

    Keyzar

    1 in stock
    US·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.

34 of the 59 retailers with shipping details ship to New Zealand. 25 do not. 9 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 VVS222,004 · 58rD VS117,681 · 52rE VVS216,177 · 56rE VS115,667 · 52rD VVS112,457 · 54rF VVS26,425 · 53rE VVS16,180 · 54rE VS26,178 · 45rF VS16,016 · 50rD IF5,535 · 49rD VS25,249 · 46rG VS13,743 · 45rD FL3,601 · 39rG VVS23,413 · 45rF VS22,588 · 43rE IF2,349 · 46rE SI11,020 · 30rF VVS1996 · 48rG VS2948 · 40rD SI1767 · 32rH VS1758 · 40rE FL617 · 35rH VVS2476 · 38rF SI1438 · 33rF IF433 · 40rH VS2323 · 28rG VVS1311 · 42rG SI1264 · 29rI VS1211 · 29rH VVS1118 · 38rG IF77 · 23rF SI267 · 26rI VVS267 · 20rE SI263 · 19rI VS262 · 14rD SI260 · 20rJ VVS248 · 19rF FL47 · 25rJ VS244 · 17rH SI139 · 20rI SI135 · 16rH IF24 · 23rK VS217 · 7rJ SI213 · 12rJ VS113 · 11rK SI112 · 6r

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

  • Radiant: a rectangular brilliant cut that combines the emerald outline with round-style faceting.
  • 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 6, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 20% 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 46 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.