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Carat Hunter · Where to buy diamonds

Where to buy a 1.25ct lab-grown heart diamond

Every retailer in our index stocking this size and shape, 55 of them, across 19,452 current listings.

Updated November 5, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

19,452

Retailers carrying

55

Median confirmed price

£203

Grade combinations

23

Certificate mix:IGI 18,617 · GIA 392 · HRD 29 · GCAL 14

What it actually costs

Half of these diamonds are listed between £163 and £322 (as of November 5, 2026).

Lower 10% £148Median £203Upper 10% £846

Middle half listed between £163 to £322

Certificated stones with a recently confirmed price only, 1,697 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Cheapest to dearest, median

442%

Cheapest to dearest, median in price

£775

Stones compared

1,407

Across 1,407 stones of this size and shape carried by more than one retailer, the dearest listing sits 442% above the cheapest for the identical certificated diamond, a typical gap of £775. 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 Jewellers1,169 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
  4. 4

    The Perfect Carat

    1,043 in stock
    US
    Terms not yet verified
  5. 5Aurelinne1,031 in stock
    United States·Founded 2021·30-day returns·Ships to Ireland
    Terms not yet verified
    Visit Aurelinne
  7. 7B2C Jewels949 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
  13. 23Yorxs271 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs

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.

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 VVS24,712 · 48rD VS12,977 · 44rD VVS12,628 · 41rE VVS22,313 · 43rE VS11,921 · 42rE VVS11,348 · 44rF VVS2665 · 40rE VS2541 · 38rF VS1537 · 39rD VS2472 · 35rD IF327 · 35rD FL174 · 28rG VVS2158 · 29rE IF153 · 35rF VVS1125 · 27rF VS2123 · 26rF IF59 · 27rE FL58 · 21rG VS254 · 22rG VS152 · 25rG VVS121 · 20rI VVS217 · 17rG IF10 · 9r

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

  • Heart: a brilliant cut with a cleft and a pointed tip, classic and recognizable.
  • 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 1,407 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 442%, about £775.

Can I see retailers for one exact grade?

Yes. Each of the 23 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.