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Carat Hunter · Where to buy diamonds

Where to buy a 3ct lab-grown radiant diamond

Every retailer in our index stocking this size and shape, 64 of them, across 167,602 current listings.

Updated October 31, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

167,602

Retailers carrying

64

Median confirmed price

€1,264

Grade combinations

30

Certificate mix:IGI 142,927 · GIA 18,196 · GCAL 3,346 · HRD 4 · AGS 3

What it actually costs

Half of these diamonds are listed between €768 and €1,541 (as of October 31, 2026).

Lower 10% €519Median €1,264Upper 10% €2,259

Middle half listed between €768 to €1,541

Certificated stones with a recently confirmed price only, 22,733 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

312%

Typical difference

€2,260

Stones compared

12,239

Across 12,239 stones of this size and shape carried by more than one retailer, the dearest listing sits 312% above the cheapest for the identical certificated diamond, a typical gap of €2,260. 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 Carat11,612 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 Jewellers8,257 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
  5. 5Aurelinne7,792 in stock
    United States·Founded 2021·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Aurelinne
  7. 7

    The Perfect Carat

    6,568 in stock
    US
    Terms not yet verified
  9. 9Adiamor5,902 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
  10. 10B2C Jewels5,681 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
Show 15 more retailers
  6. 16Moon Ocean4,679 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Moon Ocean
  8. 18Brilliance4,634 in stock
    United States·Founded 2002·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Brilliance
  9. 19RockHer4,469 in stock
    United States·Founded 2016·40-day returns·Ships to European Union
    Terms not yet verified
    Visit RockHer
  10. 20Cape Diamonds4,225 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
  13. 23Yorxs3,251 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.

15 of the 25 retailers ship to European Union. 10 do not.

Narrow it down by grade

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

D VVS225,128 · 54rE VS118,893 · 56rE VVS218,012 · 59rD VS117,983 · 58rD VVS117,025 · 52rD IF13,870 · 51rF VVS210,611 · 53rF VS19,708 · 50rD FL6,291 · 40rE VVS14,819 · 53rG VS14,539 · 46rG VVS24,347 · 45rE VS23,700 · 49rD VS22,880 · 48rF VS22,036 · 46rG VS21,558 · 43rH VS11,388 · 36rE IF1,274 · 44rF VVS11,035 · 49rH VS2784 · 35rH VVS2375 · 36rF IF369 · 39rG IF265 · 32rE FL235 · 32rG VVS1170 · 39rI VS1119 · 23rH VVS169 · 21rI VVS249 · 22rH IF40 · 25rI VS228 · 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

  • Radiant: a rectangular brilliant cut that combines the emerald outline with round-style faceting.
  • 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 12,239 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 312%, about €2,260.

Can I see retailers for one exact grade?

Yes. Each of the 30 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.