CaratHunter
Plans

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 136,101 current listings.

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

The market at this size and shape

Active listings

136,101

Retailers carrying

63

Median confirmed price

£354

Grade combinations

31

Certificate mix:IGI 126,644 · GIA 3,224 · GCAL 2,005 · HRD 60

What it actually costs

Half of these diamonds are listed between £187 and £450 (as of October 31, 2026).

Lower 10% £136Median £354Upper 10% £554

Middle half listed between £187 to £450

Certificated stones with a recently confirmed price only, 24,264 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

376%

Typical difference

£652

Stones compared

10,841

Across 10,841 stones of this size and shape carried by more than one retailer, the dearest listing sits 376% above the cheapest for the identical certificated diamond, a typical gap of £652. 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.

  4. 4NZ Jewellers7,045 in stock
    New Zealand·Founded 2006·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  5. 5Rare Carat6,797 in stock
    United States·Founded 2016·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  7. 7

    The Perfect Carat

    6,072 in stock
    US
    Terms not yet verified
  9. 9Aurelinne5,882 in stock
    United States·Founded 2021·30-day returns·Ships to Ireland
    Terms not yet verified
    Visit Aurelinne
  10. 10B2C Jewels5,099 in stock
    United States·Founded 2004·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
Show 15 more retailers
  3. 13Adiamor4,608 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
  10. 20Cape Diamonds3,050 in stock
    South Africa·Founded 2005·7-day returns·Ships to Ireland
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  11. 21Yorxs2,697 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 Ireland. 11 do not.

Narrow it down by grade

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

D VVS221,350 · 57rD VS116,857 · 52rE VVS215,346 · 55rE VS114,404 · 52rD VVS113,065 · 53rF VVS26,333 · 52rE VVS16,189 · 54rE VS25,988 · 47rF VS15,658 · 50rD IF5,413 · 49rD VS25,060 · 47rG VS13,754 · 44rG VVS23,379 · 45rD FL3,249 · 38rF VS22,493 · 43rE IF2,365 · 46rF VVS1921 · 48rG VS2920 · 42rH VS1756 · 40rE FL513 · 34rH VVS2459 · 37rF IF424 · 40rH VS2325 · 28rG VVS1289 · 39rI VS1195 · 29rH VVS1115 · 38rG IF75 · 24rI VVS265 · 20rI VS262 · 14rF FL52 · 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 10,841 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 376%, about £652.

Can I see retailers for one exact grade?

Yes. Each of the 31 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.