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Carat Hunter · Where to buy diamonds

Where to buy a 1.5ct lab-grown radiant diamond

Every retailer in our index stocking this size and shape, 64 of them, across 131,305 current listings.

Updated November 6, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

131,305

Retailers carrying

64

Median confirmed price

€585

Grade combinations

40

Certificate mix:IGI 117,483 · GIA 8,233 · GCAL 1,538 · HRD 6

What it actually costs

Half of these diamonds are listed between €266 and €693 (as of November 6, 2026).

Lower 10% €214Median €585Upper 10% €925

Middle half listed between €266 to €693

Certificated stones with a recently confirmed price only, 17,308 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

As of November 6, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 20% more for natural ones (the median across stones listed by two or more retailers). Comparing shows you the cheapest of the retailers listing the same stone.

Every retailer that stocks this spec

Ranked by active inventory count. Selection is mechanical, not editorial.

  2. 2NZ Jewellers7,636 in stock
    New Zealand·Founded 2006·GCAL, GIA, GSI, IGI·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  3. 3Carbon Sparkle7,408 in stock
    United States·GCAL, GIA, GSI, IGI·21-day returns·Ships to Ireland
    Terms read on the retailer’s own site, September 2, 2026
    Visit Carbon Sparkle
  4. 4Rare Carat6,933 in stock
    United States·Founded 2016·GCAL, GIA, IGI·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  6. 6

    The Perfect Carat

    6,372 in stock
    US·GCAL, GIA, GSI, IGI
    Terms not yet verified
  7. 7Aurelinne6,315 in stock
    United States·Founded 2021·GCAL, GIA, GSI, IGI·Ships to Ireland
    Terms not yet verified
    Visit Aurelinne
  9. 9B2C Jewels4,732 in stock
    United States·Founded 2004·GIA, IGI·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
Show 54 more retailers
  4. 14Adiamor4,257 in stock
    United States·Founded 1999·GCAL, GIA, IGI
    Terms not yet verified
    Visit Adiamor
  10. 20Cape Diamonds3,046 in stock
    South Africa·Founded 2005·GIA, IGI·7-day returns·Ships to Ireland
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  11. 21Yorxs2,643 in stock
    Germany·Founded 2011·GIA, IGI
    Terms not yet verified
    Visit Yorxs
  16. 26RockHer1,822 in stock
    United States·Founded 2016·GIA, IGI·Ships to Ireland
    Terms not yet verified
    Visit RockHer
  21. 31GemsNY1,104 in stock
    United States·Founded 1988·GCAL, GIA, IGI·Ships to Ireland
    Terms not yet verified
    Visit GemsNY
  26. 36Blue Nile803 in stock
    United States·Founded 1999·GCAL, GIA, IGI·Ships to Ireland
    Terms not yet verified
    Visit Blue Nile
  28. 38Allurez543 in stock
    United States·Founded 2010·GIA, IGI·Ships to Ireland
    Terms not yet verified
    Visit Allurez
  29. 39Jared429 in stock
    United States·Founded 1993·GCAL, GIA, IGI
    Terms not yet verified
    Visit Jared
  31. 41Zales391 in stock
    United States·Founded 1924·GCAL, GIA, IGI
    Terms not yet verified
    Visit Zales
  39. 49ZCOVA33 in stock
    Malaysia·Founded 2015·IGI·Ships to Ireland
    Terms not yet verified
    Visit ZCOVA
  40. 5025karats32 in stock
    United States·Founded 2008·IGI·60-day returns·Ships to Ireland
    Terms read on the retailer’s own site, June 15, 2026
    Visit 25karats
  44. 54

    GemTrove

    17 in stock
    AU·IGI
    Terms not yet verified
  46. 56VRAI8 in stock
    United States·Founded 2014·IGI·Ships to Ireland
    Terms not yet verified
    Visit VRAI
  47. 57

    Whiteflash

    7 in stock
    US·GIA, IGI
    Terms not yet verified
  53. 63

    Good Old Gold

    1 in stock
    US·IGI
    Terms not yet verified

Stock counts reflect current listings. 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.

34 of the 59 retailers with shipping details ship to Ireland. 25 do not. 5 retailers have not published any shipping details.

Narrow it down by grade

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

D VVS218,019 · 57rD VS117,462 · 58rE VVS216,134 · 59rD VVS114,760 · 54rE VS113,351 · 55rD IF7,039 · 48rE VVS16,321 · 52rF VS15,428 · 52rF VVS25,309 · 53rG VS14,195 · 46rD VS23,173 · 46rE VS23,161 · 45rD FL2,815 · 39rG VVS22,287 · 46rE IF1,668 · 49rH VS11,600 · 38rF VS21,540 · 46rG VS21,487 · 39rF VVS11,343 · 45rH VVS2781 · 39rE SI1601 · 31rE FL431 · 37rD SI1386 · 32rH VS2324 · 33rF SI1281 · 32rF IF272 · 40rG IF194 · 31rG VVS1193 · 35rG SI1182 · 27rI VS1152 · 27rH SI171 · 20rH IF54 · 31rI VVS252 · 21rI VS249 · 23rD SI242 · 11rI SI126 · 15rJ VS118 · 17rI SI216 · 13rH SI211 · 11rG SI210 · 4r

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?

As of November 6, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 20% more for natural ones (the median across stones listed by two or more retailers). Comparing shows you the cheapest of the retailers listing the same stone.

Can I see retailers for one exact grade?

Yes. Each of the 40 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.