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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, 50 of them, across 95,450 current listings.

Updated November 4, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

95,450

Retailers carrying

50

Median confirmed price

NZ$395

Grade combinations

30

Certificate mix:IGI 90,785 · GIA 44 · GCAL 42 · HRD 37

What it actually costs

Half of these diamonds are listed between NZ$288 and NZ$546 (as of November 4, 2026).

Lower 10% NZ$208Median NZ$395Upper 10% NZ$752

Middle half listed between NZ$288 to NZ$546

Certificated stones with a recently confirmed price only, 9,736 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

323%

Typical difference

NZ$1,184

Stones compared

7,319

Across 7,319 stones of this size and shape carried by more than one retailer, the dearest listing sits 323% above the cheapest for the identical certificated diamond, a typical gap of NZ$1,184. 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 Carat5,956 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. 7B2C 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
  9. 9Aurelinne4,568 in stock
    United States·Founded 2021·30-day returns·Ships to New Zealand
    Terms not yet verified
    Visit Aurelinne
  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

    3,976 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.

15 of the 25 retailers ship to New Zealand. 10 do not.

Narrow it down by grade

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

D VVS227,638 · 45rD VVS124,647 · 45rD VS113,165 · 44rD IF8,166 · 39rE VVS25,597 · 39rE VS13,817 · 38rD VS23,090 · 32rE VVS12,488 · 43rE VS21,285 · 31rF VVS2931 · 37rF VS1783 · 32rE IF773 · 38rD FL680 · 30rH VS1335 · 24rF VS2333 · 27rI VS2253 · 18rG VS1226 · 26rI VS1220 · 18rF VVS1196 · 34rG VVS2158 · 27rF IF134 · 33rH VS294 · 20rH VVS282 · 26rG VVS177 · 28rG VS276 · 21rE FL64 · 22rI VVS256 · 14rH VVS147 · 26rG IF19 · 12rI VVS116 · 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 7,319 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 323%, about NZ$1,184.

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.