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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 33,450 current listings.

Updated October 30, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

33,450

Retailers carrying

59

Median confirmed price

£364

Grade combinations

28

Certificate mix:IGI 30,608 · GIA 1,629 · GCAL 481 · HRD 3

What it actually costs

Half of these diamonds are listed between £183 and £524 (as of October 30, 2026).

Lower 10% £148Median £364Upper 10% £826

Middle half listed between £183 to £524

Certificated stones with a recently confirmed price only, 4,315 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

439%

Typical difference

£851

Stones compared

2,444

Across 2,444 stones of this size and shape carried by more than one retailer, the dearest listing sits 439% above the cheapest for the identical certificated diamond, a typical gap of £851. 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. 1NZ Jewellers1,905 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
  2. 2Rare Carat1,860 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
  5. 5

    The Perfect Carat

    1,656 in stock
    US
    Terms not yet verified
  7. 7Aurelinne1,516 in stock
    United States·Founded 2021·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Aurelinne
  9. 9Moon Ocean1,380 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Moon Ocean
Show 15 more retailers
  1. 11B2C Jewels1,255 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
  2. 12Adiamor1,222 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
  9. 19Cape Diamonds842 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
  11. 21Yorxs601 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 VVS24,854 · 53rD VVS14,227 · 50rD VS13,660 · 51rE VS13,309 · 49rE VVS23,245 · 51rF VS12,307 · 50rG VS11,798 · 46rF VVS21,394 · 46rE VVS11,380 · 51rD IF1,379 · 44rE VS2937 · 45rG VVS2864 · 41rD VS2786 · 46rD FL678 · 38rE IF568 · 41rF VS2563 · 41rG VS2377 · 37rH VS1295 · 39rH VVS2249 · 30rF VVS1172 · 32rI VS1105 · 23rF IF79 · 31rE FL63 · 26rG VVS157 · 26rH VS247 · 17rH VVS120 · 3rI VS220 · 15rI VVS216 · 15r

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 2,444 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 439%, about £851.

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.