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Carat Hunter · Where to buy diamonds

Where to buy a 0.5ct lab-grown heart diamond

Every retailer in our index stocking this size and shape, 44 of them, across 16,100 current listings.

Updated November 7, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

16,100

Retailers carrying

44

Median confirmed price

€162

Grade combinations

26

Certificate mix:IGI 15,426 · GIA 10

What it actually costs

Half of these diamonds are listed between €122 and €269 (as of November 7, 2026).

Lower 10% €98Median €162Upper 10% €443

Middle half listed between €122 to €269

Certificated stones with a recently confirmed price only, 1,492 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.

  6. 6NZ Jewellers974 in stock
    New Zealand·Founded 2006·IGI·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  8. 8

    The Perfect Carat

    906 in stock
    US·IGI
    Terms not yet verified
  9. 9B2C Jewels810 in stock
    United States·Founded 2004·IGI·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
Show 34 more retailers
  2. 12Cape Diamonds553 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
  18. 28Rare Carat69 in stock
    United States·Founded 2016·IGI·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  20. 30Allurez21 in stock
    United States·Founded 2010·IGI·Ships to Ireland
    Terms not yet verified
    Visit Allurez
  21. 31GemsNY21 in stock
    United States·Founded 1988·IGI·Ships to Ireland
    Terms not yet verified
    Visit GemsNY
  28. 38

    Keyzar

    2 in stock
    US·IGI
    Terms not yet verified
  30. 40Zales2 in stock
    United States·Founded 1924·IGI
    Terms not yet verified
    Visit Zales
  33. 43RockHer1 in stock
    United States·Founded 2016·GIA·Ships to Ireland
    Terms not yet verified
    Visit RockHer

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.

25 of the 41 retailers with shipping details ship to Ireland. 16 do not. 3 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 VVS23,893 · 37rD VS13,737 · 37rE VVS21,647 · 34rD VVS11,605 · 30rE VS11,122 · 30rD VS2784 · 29rD IF523 · 29rD FL515 · 18rE VVS1498 · 31rF VVS2432 · 30rF VS1324 · 26rE VS2311 · 28rG VVS2138 · 21rE IF104 · 21rD SI195 · 27rG VS167 · 24rF VS253 · 19rE SI152 · 22rE FL42 · 18rF VVS137 · 21rF SI124 · 17rG VS223 · 14rE SI222 · 11rH VS122 · 8rH VS211 · 5rF IF10 · 10r

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?

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 26 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.