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Carat Hunter · Where to buy diamonds

Where to buy a 1.25ct lab-grown round diamond

Every retailer in our index stocking this size and shape, 65 of them, across 275,803 current listings.

Updated November 2, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

275,803

Retailers carrying

65

Median confirmed price

£225

Grade combinations

32

Certificate mix:IGI 263,253 · GIA 3,592 · GCAL 2,442 · HRD 46 · AGS 1

What it actually costs

Half of these diamonds are listed between £151 and £377 (as of November 2, 2026).

Lower 10% £136Median £225Upper 10% £685

Middle half listed between £151 to £377

Certificated stones with a recently confirmed price only, 19,897 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

417%

Typical difference

£702

Stones compared

15,257

Across 15,257 stones of this size and shape carried by more than one retailer, the dearest listing sits 417% above the cheapest for the identical certificated diamond, a typical gap of £702. 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. 2Aurelinne17,022 in stock
    United States·Founded 2021·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Aurelinne
  3. 3NZ Jewellers15,956 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
  5. 5

    The Perfect Carat

    14,038 in stock
    US
    Terms not yet verified
  8. 8B2C Jewels12,067 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
  9. 9Rare Carat11,538 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
Show 15 more retailers
  2. 12Adiamor10,422 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
  6. 16Yorxs8,225 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs
  7. 17Moon Ocean8,019 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Moon Ocean
  8. 18Cape Diamonds7,843 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

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 VVS268,748 · 55rD VS148,664 · 53rD VVS127,750 · 55rE VVS223,576 · 53rE VS118,774 · 53rD VS214,358 · 45rE VVS112,055 · 52rF VVS29,900 · 50rF VS17,767 · 51rD FL6,300 · 40rE VS26,220 · 48rG VVS25,690 · 42rD IF5,020 · 56rG VS14,461 · 44rF VVS13,108 · 45rF VS22,438 · 40rE IF2,383 · 44rH VVS21,753 · 37rH VS11,434 · 37rG VVS11,240 · 37rG VS21,042 · 34rE FL834 · 31rF IF505 · 35rH VS2497 · 32rH VVS1427 · 30rI VS1251 · 25rI VS2195 · 24rI VVS2153 · 24rF FL132 · 27rG IF86 · 30rI VVS125 · 19rI IF15 · 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

  • Round: the most common cut, with the highest light return per carat.
  • 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 15,257 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 417%, about £702.

Can I see retailers for one exact grade?

Yes. Each of the 32 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.