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Carat Hunter · Where to buy diamonds

Where to buy a 0.5ct lab-grown oval diamond

Every retailer in our index stocking this size and shape, 51 of them, across 95,477 current listings.

Updated November 5, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

95,477

Retailers carrying

51

Median confirmed price

NZ$394

Grade combinations

30

Certificate mix:IGI 90,823 · GIA 42 · GCAL 41 · HRD 37

What it actually costs

Half of these diamonds are listed between NZ$286 and NZ$545 (as of November 5, 2026).

Lower 10% NZ$208Median NZ$394Upper 10% NZ$749

Middle half listed between NZ$286 to NZ$545

Certificated stones with a recently confirmed price only, 9,584 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

337%

Typical difference

NZ$1,206

Stones compared

7,314

Across 7,314 stones of this size and shape carried by more than one retailer, the dearest listing sits 337% above the cheapest for the identical certificated diamond, a typical gap of NZ$1,206. 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.

  3. 3Rare Carat5,955 in stock
    United States·Founded 2016·30-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  6. 6Yorxs4,827 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs
  7. 7Aurelinne4,748 in stock
    United States·Founded 2021·30-day returns·Ships to New Zealand
    Terms not yet verified
    Visit Aurelinne
  8. 8B2C Jewels4,732 in stock
    United States·Founded 2004·30-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  10. 10NZ Jewellers4,370 in stock
    New Zealand·Founded 2006·30-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
Show 15 more retailers
  1. 11

    The Perfect Carat

    3,975 in stock
    US
    Terms not yet verified
  5. 15Cape Diamonds2,564 in stock
    South Africa·Founded 2005·7-day returns·Ships to New Zealand
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  10. 20Adiamor1,610 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor

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.

16 of the 25 retailers ship to New Zealand. 9 do not.

Narrow it down by grade

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

D VVS227,779 · 45rD VVS124,434 · 45rD VS113,288 · 45rD IF8,112 · 39rE VVS25,629 · 39rE VS13,804 · 38rD VS23,111 · 33rE VVS12,474 · 44rE VS21,286 · 31rF VVS2936 · 37rF VS1799 · 32rE IF763 · 38rD FL665 · 30rH VS1334 · 24rF VS2328 · 27rI VS2254 · 18rG VS1227 · 26rI VS1221 · 18rF VVS1199 · 34rG VVS2166 · 27rF IF132 · 33rH VS294 · 20rH VVS285 · 26rG VVS177 · 28rG VS275 · 21rE FL63 · 22rI VVS256 · 14rH VVS146 · 26rG IF19 · 12rI VVS117 · 16r

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

  • Oval: an elongated brilliant cut that looks larger face-up than its carat weight.
  • 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 7,314 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 337%, about NZ$1,206.

Can I see retailers for one exact grade?

Yes. Each of the 30 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.