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Carat Hunter · Where to buy diamonds

Where to buy a 0.5ct lab-grown radiant diamond

Every retailer in our index stocking this size and shape, 47 of them, across 38,600 current listings.

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

The market at this size and shape

Active listings

38,600

Retailers carrying

47

Median confirmed price

SGD 269

Grade combinations

34

Certificate mix:IGI 36,614 · GCAL 180 · GIA 31 · HRD 5

What it actually costs

Half of these diamonds are listed between SGD 167 and SGD 506 (as of November 6, 2026).

Lower 10% SGD 143Median SGD 269Upper 10% SGD 653

Middle half listed between SGD 167 to SGD 506

Certificated stones with a recently confirmed price only, 3,376 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.

  2. 2Rare Carat2,331 in stock
    United States·Founded 2016·GCAL, GIA, IGI·30-day returns·Ships to Singapore
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  4. 4NZ Jewellers2,137 in stock
    New Zealand·Founded 2006·GIA, IGI·30-day returns·Ships to Singapore
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  6. 6

    The Perfect Carat

    2,070 in stock
    US·GIA, IGI
    Terms not yet verified
  10. 10B2C Jewels1,477 in stock
    United States·Founded 2004·GIA, IGI·30-day returns·Ships to Singapore
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
Show 37 more retailers
  2. 12Yorxs1,392 in stock
    Germany·Founded 2011·GIA, IGI
    Terms not yet verified
    Visit Yorxs
  3. 13Cape Diamonds1,320 in stock
    South Africa·Founded 2005·GIA, IGI·7-day returns·Ships to Singapore
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  22. 32GemsNY116 in stock
    United States·Founded 1988·IGI·Ships to Singapore
    Terms not yet verified
    Visit GemsNY
  24. 34Allurez76 in stock
    United States·Founded 2010·IGI·Ships to Singapore
    Terms not yet verified
    Visit Allurez
  31. 41Zales13 in stock
    United States·Founded 1924·IGI
    Terms not yet verified
    Visit Zales
  34. 44Jared3 in stock
    United States·Founded 1993·IGI
    Terms not yet verified
    Visit Jared
  37. 47

    Diamond Culture

    1 in stock
    HK·IGI
    Terms not yet verified

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.

22 of the 44 retailers with shipping details ship to Singapore. 22 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 VVS113,324 · 43rD VVS26,354 · 40rD VS13,414 · 38rD IF3,120 · 40rE VVS22,470 · 40rE VS11,959 · 37rE VVS11,857 · 37rF VVS2884 · 36rD VS2850 · 33rG VVS2673 · 32rD FL537 · 24rE VS2533 · 30rF VS1493 · 31rG VS1463 · 27rE IF370 · 37rF VVS1225 · 33rF VS2193 · 25rG VS2176 · 26rH VS1112 · 22rD SI167 · 23rE FL62 · 23rF SI160 · 18rF IF54 · 25rH VS254 · 25rG VVS147 · 22rH SI145 · 16rH VVS239 · 21rG SI137 · 15rE SI134 · 19rI VS215 · 14rH SI213 · 13rI VVS113 · 13rE SI212 · 9rJ VS111 · 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

  • 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?

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 34 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.