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Carat Hunter · Where to buy diamonds

Where to buy a 3ct lab-grown emerald diamond

Every retailer in our index stocking this size and shape, 63 of them, across 194,200 current listings.

Updated October 28, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

194,200

Retailers carrying

63

Median confirmed price

NZ$1,371

Grade combinations

32

Certificate mix:IGI 171,983 · GIA 16,729 · GCAL 625 · HRD 10

What it actually costs

Half of these diamonds are listed between NZ$896 and NZ$2,766 (as of October 28, 2026).

Lower 10% NZ$787Median NZ$1,371Upper 10% NZ$6,258

Middle half listed between NZ$896 to NZ$2,766

Certificated stones with a recently confirmed price only, 19,179 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

301%

Typical difference

NZ$3,583

Stones compared

15,587

Across 15,587 stones of this size and shape carried by more than one retailer, the dearest listing sits 301% above the cheapest for the identical certificated diamond, a typical gap of NZ$3,583. 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. 1Rare Carat12,488 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 Jewellers8,968 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

    8,276 in stock
    US
    Terms not yet verified
  8. 8Aurelinne8,070 in stock
    United States·Founded 2021·30-day returns·Ships to New Zealand
    Terms not yet verified
    Visit Aurelinne
Show 15 more retailers
  3. 13Adiamor6,778 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
  5. 15B2C Jewels6,404 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
  7. 17RockHer5,031 in stock
    United States·Founded 2016·40-day returns·Ships to New Zealand
    Terms not yet verified
    Visit RockHer
  10. 20Cape Diamonds4,378 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
  11. 21Yorxs4,001 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs

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.

14 of the 25 retailers ship to New Zealand. 11 do not.

Narrow it down by grade

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

E VS126,794 · 58rD VS124,358 · 55rE VVS221,646 · 55rD VVS220,830 · 55rF VS115,842 · 53rD VVS113,069 · 54rF VVS212,994 · 54rD IF10,710 · 46rE VS27,964 · 45rG VS16,918 · 47rD FL5,885 · 40rG VVS24,707 · 48rE VVS14,410 · 50rD VS24,037 · 47rF VS24,004 · 49rH VS11,657 · 38rG VS21,607 · 41rE IF1,559 · 45rF VVS11,544 · 46rH VVS21,071 · 35rH VS2743 · 30rE FL622 · 39rG VVS1363 · 36rF IF260 · 32rI VS1141 · 23rF FL117 · 27rH VVS198 · 24rG IF88 · 33rI VS272 · 23rG FL37 · 20rI VVS228 · 12rH IF23 · 22r

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 15,587 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 301%, about NZ$3,583.

Can I see retailers for one exact grade?

Yes. Each of the 32 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.