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Carat Hunter · Where to buy diamonds

Where to buy a 1ct lab-grown radiant diamond

Every retailer in our index stocking this size and shape, 63 of them, across 137,582 current listings.

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

The market at this size and shape

Active listings

137,582

Retailers carrying

63

Median confirmed price

€425

Grade combinations

31

Certificate mix:IGI 127,772 · GIA 3,240 · GCAL 2,001 · HRD 60

What it actually costs

Half of these diamonds are listed between €228 and €540 (as of November 1, 2026).

Lower 10% €163Median €425Upper 10% €663

Middle half listed between €228 to €540

Certificated stones with a recently confirmed price only, 24,326 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

392%

Typical difference

€789

Stones compared

10,766

Across 10,766 stones of this size and shape carried by more than one retailer, the dearest listing sits 392% above the cheapest for the identical certificated diamond, a typical gap of €789. 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. 2NZ Jewellers7,421 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. 5Rare Carat6,791 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
  6. 6

    The Perfect Carat

    6,479 in stock
    US
    Terms not yet verified
  9. 9Aurelinne5,971 in stock
    United States·Founded 2021·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Aurelinne
Show 15 more retailers
  1. 11B2C Jewels5,083 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
  3. 13Adiamor4,474 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
  4. 14Moon Ocean4,393 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Moon Ocean
  10. 20Yorxs2,971 in stock
    Germany·Founded 2011·100-day returns·Ships to European Union
    Terms not yet verified
    Visit Yorxs
  11. 21Cape Diamonds2,910 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

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 VVS221,708 · 57rD VS117,140 · 52rE VVS215,466 · 55rE VS114,686 · 53rD VVS112,960 · 53rF VVS26,386 · 52rE VVS16,195 · 54rE VS26,097 · 46rF VS15,730 · 50rD IF5,423 · 49rD VS25,142 · 47rG VS13,760 · 44rG VVS23,379 · 45rD FL3,330 · 38rF VS22,551 · 43rE IF2,372 · 46rG VS2934 · 41rF VVS1932 · 48rH VS1755 · 40rE FL537 · 34rH VVS2462 · 37rF IF426 · 40rH VS2323 · 28rG VVS1294 · 39rI VS1197 · 29rH VVS1117 · 38rG IF75 · 24rI VVS265 · 20rI VS262 · 14rF FL51 · 25rH 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

  • 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 10,766 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 392%, about €789.

Can I see retailers for one exact grade?

Yes. Each of the 31 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.