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Carat Hunter · Where to buy diamonds

Where to buy a 0.5ct lab-grown emerald diamond

Every retailer in our index stocking this size and shape, 52 of them, across 36,852 current listings.

Updated October 30, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

36,852

Retailers carrying

52

Median confirmed price

NZ$397

Grade combinations

29

Certificate mix:IGI 33,523 · GCAL 133 · GIA 128 · HRD 4

What it actually costs

Half of these diamonds are listed between NZ$242 and NZ$610 (as of October 30, 2026).

Lower 10% NZ$201Median NZ$397Upper 10% NZ$837

Middle half listed between NZ$242 to NZ$610

Certificated stones with a recently confirmed price only, 3,794 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

395%

Typical difference

NZ$1,360

Stones compared

2,924

Across 2,924 stones of this size and shape carried by more than one retailer, the dearest listing sits 395% above the cheapest for the identical certificated diamond, a typical gap of NZ$1,360. 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.

  1. 1Aurelinne2,586 in stock
    United States·Founded 2021·30-day returns·Ships to New Zealand
    Terms not yet verified
    Visit Aurelinne
  4. 4Rare Carat2,414 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
  5. 5NZ Jewellers2,205 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
  7. 7

    The Perfect Carat

    1,982 in stock
    US
    Terms not yet verified
  10. 10B2C Jewels1,369 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
Show 15 more retailers
  1. 11Yorxs1,366 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs
  3. 13Cape Diamonds1,024 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

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 VVS27,372 · 46rD VVS17,328 · 45rD VS14,136 · 43rD IF3,179 · 40rE VVS22,495 · 41rE VS12,154 · 38rE VVS11,316 · 40rD VS21,113 · 34rG VS11,065 · 29rF VS11,048 · 34rE VS2823 · 37rF VS2623 · 29rF VVS2615 · 32rE IF561 · 37rG VS2465 · 26rH VS1455 · 24rG VVS2455 · 28rD FL389 · 31rH VS2263 · 23rI VS1222 · 20rH VVS2162 · 24rF VVS1132 · 33rI VS2112 · 14rE FL105 · 25rH VVS177 · 27rI VVS267 · 18rG IF67 · 29rF IF23 · 15rG VVS117 · 14r

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

  • Emerald: a rectangular step cut with a hall-of-mirrors look that requires high clarity.
  • 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 2,924 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 395%, about NZ$1,360.

Can I see retailers for one exact grade?

Yes. Each of the 29 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.

Where to Buy 0.5ct Lab Grown Emerald Diamonds | Carat Hunter