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Carat Hunter · Where to buy diamonds

Where to buy a 0.5ct lab-grown emerald diamond

Every retailer in our index stocking this size and shape, 52 of them, across 38,196 current listings.

Updated November 6, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

38,196

Retailers carrying

52

Median confirmed price

£153

Grade combinations

44

Certificate mix:IGI 34,529 · GCAL 150 · GIA 148 · HRD 4

What it actually costs

Half of these diamonds are listed between £101 and £254 (as of November 6, 2026).

Lower 10% £84Median £153Upper 10% £351

Middle half listed between £101 to £254

Certificated stones with a recently confirmed price only, 3,738 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

As of November 5, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 19% 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.

  2. 2Carbon Sparkle2,559 in stock
    United States·GIA, IGI·21-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, September 2, 2026
    Visit Carbon Sparkle
  3. 3Rare Carat2,559 in stock
    United States·Founded 2016·GCAL, GIA, IGI·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  4. 4Aurelinne2,496 in stock
    United States·Founded 2021·GIA, IGI·Ships to United Kingdom
    Terms not yet verified
    Visit Aurelinne
  5. 5NZ Jewellers2,345 in stock
    New Zealand·Founded 2006·GIA, IGI·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  6. 6

    The Perfect Carat

    2,268 in stock
    US·GIA, IGI
    Terms not yet verified
Show 42 more retailers
  1. 11Yorxs1,360 in stock
    Germany·Founded 2011·GIA, IGI
    Terms not yet verified
    Visit Yorxs
  2. 12B2C Jewels1,358 in stock
    United States·Founded 2004·GIA, IGI·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  3. 13Cape Diamonds1,055 in stock
    South Africa·Founded 2005·GIA, IGI·7-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  21. 31GemsNY298 in stock
    United States·Founded 1988·IGI·Ships to United Kingdom
    Terms not yet verified
    Visit GemsNY
  23. 33Allurez167 in stock
    United States·Founded 2010·IGI·Ships to United Kingdom
    Terms not yet verified
    Visit Allurez
  31. 41Zales23 in stock
    United States·Founded 1924·GCAL, IGI
    Terms not yet verified
    Visit Zales
  34. 44ZCOVA9 in stock
    Malaysia·Founded 2015·IGI·Ships to United Kingdom
    Terms not yet verified
    Visit ZCOVA
  35. 45Jared8 in stock
    United States·Founded 1993·GCAL, IGI
    Terms not yet verified
    Visit Jared
  39. 4925karats2 in stock
    United States·Founded 2008·IGI·60-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, June 15, 2026
    Visit 25karats

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.

31 of the 51 retailers with shipping details ship to United Kingdom. 20 do not. 1 retailer has 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 VVS17,324 · 45rD VVS27,322 · 47rD VS14,079 · 42rD IF3,177 · 42rE VVS22,565 · 41rE VS12,220 · 38rE VVS11,295 · 41rD VS21,180 · 36rG VS11,061 · 28rF VS11,043 · 34rE VS2861 · 37rF VS2623 · 26rF VVS2622 · 32rE IF553 · 37rG VS2461 · 25rG VVS2461 · 27rH VS1451 · 23rD FL394 · 30rH VS2267 · 22rE SI1237 · 26rI VS1219 · 19rG SI1214 · 20rF SI1177 · 23rD SI1169 · 24rH VVS2162 · 24rF VVS1123 · 32rI VS2112 · 14rE FL103 · 25rH SI184 · 15rH VVS178 · 27rI VVS267 · 18rG IF65 · 29rI SI160 · 14rJ VS158 · 17rJ VS251 · 14rI SI243 · 11rD SI242 · 19rG SI229 · 13rH SI226 · 11rF IF23 · 15rJ SI120 · 11rE SI216 · 15rG VVS116 · 13rK VS211 · 11r

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

  • Emerald: a rectangular step cut with a hall-of-mirrors look that requires high clarity.
  • 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 5, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 19% 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 44 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.