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Carat Hunter · Where to buy diamonds

Where to buy a 3ct lab-grown asscher diamond

Every retailer in our index stocking this size and shape, 56 of them, across 40,366 current listings.

Updated October 29, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

40,366

Retailers carrying

56

Median confirmed price

NZ$1,639

Grade combinations

28

Certificate mix:IGI 34,239 · GIA 4,652 · GCAL 48 · HRD 21

What it actually costs

Half of these diamonds are listed between NZ$967 and NZ$2,604 (as of October 29, 2026).

Lower 10% NZ$871Median NZ$1,639Upper 10% NZ$3,746

Middle half listed between NZ$967 to NZ$2,604

Certificated stones with a recently confirmed price only, 6,896 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

350%

Typical difference

NZ$4,195

Stones compared

4,450

Across 4,450 stones of this size and shape carried by more than one retailer, the dearest listing sits 350% above the cheapest for the identical certificated diamond, a typical gap of NZ$4,195. 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.

  2. 2Rare Carat3,924 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
  8. 8Adiamor1,262 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
Show 15 more retailers
  2. 12B2C Jewels1,197 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
  3. 13NZ Jewellers1,180 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
  4. 14

    The Perfect Carat

    1,091 in stock
    US
    Terms not yet verified
  5. 15Moon Ocean1,019 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to New Zealand
    Terms not yet verified
    Visit Moon Ocean
  6. 16Aurelinne1,013 in stock
    United States·Founded 2021·30-day returns·Ships to New Zealand
    Terms not yet verified
    Visit Aurelinne
  7. 17RockHer937 in stock
    United States·Founded 2016·40-day returns·Ships to New Zealand
    Terms not yet verified
    Visit RockHer
  9. 19Yorxs741 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs
  10. 20Cape Diamonds733 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.

E VVS26,324 · 51rE VS14,604 · 48rD VVS24,103 · 48rF VVS23,853 · 48rF VS13,262 · 47rD VVS13,225 · 46rD VS13,083 · 49rD IF1,972 · 41rG VS11,460 · 43rD FL1,293 · 35rE VVS11,275 · 44rE VS21,215 · 41rG VVS21,177 · 42rF VS2873 · 37rD VS2620 · 37rH VS1429 · 38rH VVS2339 · 35rG VS2319 · 36rF VVS1240 · 37rH VS2203 · 30rE FL107 · 26rE IF101 · 31rG VVS186 · 25rF IF62 · 28rG IF37 · 27rH VVS135 · 6rI VVS130 · 16rI VS124 · 15r

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

  • Asscher: a square step cut with cropped corners.
  • 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 4,450 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 350%, about NZ$4,195.

Can I see retailers for one exact grade?

Yes. Each of the 28 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 3ct Lab Grown Asscher Diamonds | Carat Hunter