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Carat Hunter · Where to buy diamonds

Where to buy a 1.25ct lab-grown radiant diamond

Every retailer in our index stocking this size and shape, 59 of them, across 35,452 current listings.

Updated November 3, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

35,452

Retailers carrying

59

Median confirmed price

£356

Grade combinations

28

Certificate mix:IGI 32,464 · GIA 1,651 · GCAL 482 · HRD 3

What it actually costs

Half of these diamonds are listed between £186 and £520 (as of November 3, 2026).

Lower 10% £147Median £356Upper 10% £797

Middle half listed between £186 to £520

Certificated stones with a recently confirmed price only, 4,472 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

423%

Typical difference

£812

Stones compared

2,566

Across 2,566 stones of this size and shape carried by more than one retailer, the dearest listing sits 423% above the cheapest for the identical certificated diamond, a typical gap of £812. 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 Jewellers1,968 in stock
    New Zealand·Founded 2006·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  3. 3

    The Perfect Carat

    1,927 in stock
    US
    Terms not yet verified
  4. 4Rare Carat1,873 in stock
    United States·Founded 2016·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  8. 8Aurelinne1,539 in stock
    United States·Founded 2021·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Aurelinne
  10. 10Adiamor1,341 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
Show 15 more retailers
  1. 11B2C Jewels1,263 in stock
    United States·Founded 2004·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  3. 13Moon Ocean1,231 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Moon Ocean
  9. 19Cape Diamonds868 in stock
    South Africa·Founded 2005·7-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  10. 20Yorxs772 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.

16 of the 25 retailers ship to United Kingdom. 9 do not.

Narrow it down by grade

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

D VVS25,363 · 54rD VVS14,264 · 50rD VS14,107 · 51rE VVS23,714 · 51rE VS13,700 · 52rF VS12,292 · 50rG VS11,799 · 46rE VVS11,450 · 52rF VVS21,415 · 46rD IF1,382 · 45rE VS2940 · 45rG VVS2883 · 41rD VS2801 · 46rD FL677 · 38rE IF577 · 41rF VS2568 · 41rG VS2376 · 37rH VS1300 · 39rH VVS2253 · 30rF VVS1174 · 32rI VS1113 · 23rF IF79 · 31rE FL62 · 25rG VVS156 · 26rH VS248 · 18rH VVS121 · 3rI VS220 · 15rI VVS217 · 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 2,566 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 423%, about £812.

Can I see retailers for one exact grade?

Yes. Each of the 28 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.