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Carat Hunter · Where to buy diamonds

Where to buy a 1ct lab-grown radiant diamond

Every retailer in our index stocking this size and shape, 65 of them, across 138,738 current listings.

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

The market at this size and shape

Active listings

138,738

Retailers carrying

65

Median confirmed price

SGD 594

Grade combinations

31

Certificate mix:IGI 129,105 · GIA 3,220 · GCAL 1,988 · HRD 60

What it actually costs

Half of these diamonds are listed between SGD 305 and SGD 759 (as of November 5, 2026).

Lower 10% SGD 231Median SGD 594Upper 10% SGD 932

Middle half listed between SGD 305 to SGD 759

Certificated stones with a recently confirmed price only, 24,771 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

340%

Typical difference

SGD 1,068

Stones compared

11,498

Across 11,498 stones of this size and shape carried by more than one retailer, the dearest listing sits 340% above the cheapest for the identical certificated diamond, a typical gap of SGD 1,068. 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. 2NZ Jewellers7,692 in stock
    New Zealand·Founded 2006·30-day returns·Ships to Singapore
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  5. 5Rare Carat6,744 in stock
    United States·Founded 2016·30-day returns·Ships to Singapore
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  6. 6

    The Perfect Carat

    6,620 in stock
    US
    Terms not yet verified
  9. 9Aurelinne5,886 in stock
    United States·Founded 2021·30-day returns·Ships to Singapore
    Terms not yet verified
    Visit Aurelinne
  10. 10B2C Jewels4,929 in stock
    United States·Founded 2004·30-day returns·Ships to Singapore
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
Show 15 more retailers
  4. 14Adiamor4,416 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
  10. 20Cape Diamonds2,998 in stock
    South Africa·Founded 2005·7-day returns·Ships to Singapore
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  11. 21Yorxs2,991 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs

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.

14 of the 25 retailers ship to Singapore. 11 do not.

Narrow it down by grade

Each combination below has its own page with the retailers that stock exactly that grade.

D VVS221,629 · 58rD VS117,370 · 52rE VVS215,864 · 56rE VS115,253 · 53rD VVS112,553 · 54rF VVS26,335 · 53rE VVS16,158 · 55rE VS26,130 · 45rF VS15,921 · 50rD IF5,473 · 49rD VS25,193 · 46rG VS13,732 · 44rD FL3,437 · 38rG VVS23,375 · 45rF VS22,573 · 43rE IF2,354 · 47rF VVS1976 · 48rG VS2942 · 41rH VS1759 · 40rE FL573 · 34rH VVS2475 · 38rF IF424 · 40rH VS2324 · 28rG VVS1310 · 41rI VS1211 · 29rH VVS1118 · 38rG IF72 · 23rI VVS267 · 20rI VS262 · 14rF FL47 · 25rH IF24 · 23r

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?

Across 11,498 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 340%, about SGD 1,068.

Can I see retailers for one exact grade?

Yes. Each of the 31 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.