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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, 64 of them, across 199,882 current listings.

Updated November 1, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

199,882

Retailers carrying

64

Median confirmed price

€682

Grade combinations

32

Certificate mix:IGI 177,363 · GIA 16,698 · GCAL 625 · HRD 10

What it actually costs

Half of these diamonds are listed between €457 and €1,396 (as of November 1, 2026).

Lower 10% €402Median €682Upper 10% €3,178

Middle half listed between €457 to €1,396

Certificated stones with a recently confirmed price only, 19,284 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

291%

Typical difference

€1,823

Stones compared

15,789

Across 15,789 stones of this size and shape carried by more than one retailer, the dearest listing sits 291% above the cheapest for the identical certificated diamond, a typical gap of €1,823. 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 Carat12,400 in stock
    United States·Founded 2016·30-day returns·Ships to European Union
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  3. 3NZ Jewellers9,930 in stock
    New Zealand·Founded 2006·30-day returns·Ships to European Union
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  7. 7Aurelinne8,657 in stock
    United States·Founded 2021·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Aurelinne
  8. 8

    The Perfect Carat

    8,598 in stock
    US
    Terms not yet verified
Show 15 more retailers
  2. 12Adiamor6,757 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
  3. 13Brilliance6,664 in stock
    United States·Founded 2002·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Brilliance
  4. 14B2C Jewels6,592 in stock
    United States·Founded 2004·30-day returns·Ships to European Union
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  8. 18RockHer5,129 in stock
    United States·Founded 2016·40-day returns·Ships to European Union
    Terms not yet verified
    Visit RockHer
  10. 20Cape Diamonds4,620 in stock
    South Africa·Founded 2005·7-day returns·Ships to European Union
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  12. 22Yorxs3,940 in stock
    Germany·Founded 2011·100-day returns·Ships to European Union
    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 European Union. 11 do not.

Narrow it down by grade

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

E VS127,611 · 58rD VS124,597 · 55rE VVS223,218 · 55rD VVS222,068 · 55rF VS115,942 · 54rD VVS113,451 · 53rF VVS213,246 · 54rD IF10,788 · 46rE VS28,126 · 45rG VS16,974 · 47rD FL6,108 · 40rG VVS24,637 · 48rE VVS14,595 · 51rD VS24,227 · 47rF VS24,124 · 49rG VS21,685 · 41rH VS11,634 · 38rF VVS11,595 · 46rE IF1,582 · 46rH VVS21,072 · 36rH VS2739 · 30rE FL636 · 40rG VVS1374 · 37rF IF257 · 31rI VS1139 · 23rF FL117 · 27rH VVS194 · 24rG IF87 · 33rI VS271 · 23rG FL39 · 20rI VVS224 · 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 15,789 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 291%, about €1,823.

Can I see retailers for one exact grade?

Yes. Each of the 32 color 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.