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Carat Hunter · Where to buy diamonds

Where to buy a 1.25ct lab-grown marquise diamond

Every retailer in our index stocking this size and shape, 61 of them, across 38,291 current listings.

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

The market at this size and shape

Active listings

38,291

Retailers carrying

61

Median confirmed price

SGD 589

Grade combinations

29

Certificate mix:IGI 36,104 · GIA 527 · GCAL 462 · HRD 1

What it actually costs

Half of these diamonds are listed between SGD 367 and SGD 986 (as of November 6, 2026).

Lower 10% SGD 286Median SGD 589Upper 10% SGD 1,584

Middle half listed between SGD 367 to SGD 986

Certificated stones with a recently confirmed price only, 3,202 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.

  1. 1Rare Carat2,852 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
  6. 6NZ Jewellers1,601 in stock
    New Zealand·Founded 2006·GCAL, GIA, IGI·30-day returns·Ships to Singapore
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  7. 7Carbon Sparkle1,582 in stock
    United States·GCAL, GIA, IGI·21-day returns·Ships to Singapore
    Terms read on the retailer’s own site, September 2, 2026
    Visit Carbon Sparkle
  8. 8Adiamor1,557 in stock
    United States·Founded 1999·GCAL, GIA, IGI
    Terms not yet verified
    Visit Adiamor
  10. 10B2C Jewels1,430 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 51 more retailers
  1. 11

    The Perfect Carat

    1,394 in stock
    US·GCAL, GIA, IGI
    Terms not yet verified
  2. 12Aurelinne1,372 in stock
    United States·Founded 2021·GCAL, GIA, IGI·Ships to Singapore
    Terms not yet verified
    Visit Aurelinne
  6. 16Cape Diamonds1,027 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
  7. 17Yorxs1,004 in stock
    Germany·Founded 2011·GIA, IGI
    Terms not yet verified
    Visit Yorxs
  17. 27

    GemTrove

    440 in stock
    AU·GCAL, GIA, IGI
    Terms not yet verified
  20. 30Blue Nile408 in stock
    United States·Founded 1999·GCAL, GIA, IGI·Ships to Singapore
    Terms not yet verified
    Visit Blue Nile
  24. 34RockHer348 in stock
    United States·Founded 2016·GIA, IGI·Ships to Singapore
    Terms not yet verified
    Visit RockHer
  25. 35GemsNY246 in stock
    United States·Founded 1988·GCAL, IGI·Ships to Singapore
    Terms not yet verified
    Visit GemsNY
  27. 37Jared222 in stock
    United States·Founded 1993·GCAL, GIA, IGI
    Terms not yet verified
    Visit Jared
  29. 39Zales218 in stock
    United States·Founded 1924·GCAL, GIA, IGI
    Terms not yet verified
    Visit Zales
  35. 45Allurez75 in stock
    United States·Founded 2010·Ships to Singapore
    Terms not yet verified
    Visit Allurez
  40. 50ZCOVA25 in stock
    Malaysia·Founded 2015·IGI·Ships to Singapore
    Terms not yet verified
    Visit ZCOVA
  43. 53VRAI14 in stock
    United States·Founded 2014·IGI
    Terms not yet verified
    Visit VRAI
  45. 5525karats9 in stock
    United States·Founded 2008·IGI·60-day returns·Ships to Singapore
    Terms read on the retailer’s own site, June 15, 2026
    Visit 25karats
  47. 57

    Whiteflash

    6 in stock
    US·IGI
    Terms not yet verified
  51. 61

    Lauren B

    1 in stock
    US
    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.

30 of the 56 retailers with shipping details ship to Singapore. 26 do not. 5 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.

E VVS25,378 · 54rD VVS25,166 · 56rD VVS14,897 · 51rD IF4,321 · 48rD FL3,674 · 40rE VS13,389 · 53rD VS13,136 · 54rE VVS11,854 · 53rF VVS21,843 · 52rF VS11,042 · 49rE VS2783 · 41rF VVS1446 · 43rD VS2415 · 42rG VS1365 · 33rE IF348 · 38rF VS2318 · 36rG VVS2232 · 33rE FL211 · 33rE SI169 · 24rG VVS169 · 23rG VS266 · 23rH VS165 · 11rF IF40 · 25rH VS237 · 8rH VVS233 · 6rH VVS127 · 3rD SI123 · 16rG SI112 · 6rF SI111 · 3r

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

  • Marquise: a pointed-end ellipse that faces up large for its carat.
  • 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 29 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.