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Carat Hunter · Where to buy diamonds

Where to buy a 1.5ct lab-grown cushion diamond

Every retailer in our index stocking this size and shape, 81 of them, across 114,233 current listings.

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

The market at this size and shape

Active listings

114,233

Retailers carrying

81

Median confirmed price

CA$587

Grade combinations

45

Certificate mix:IGI 108,957 · GIA 2,747 · GCAL 985 · HRD 7

What it actually costs

Half of these diamonds are listed between CA$419 and CA$837 (as of November 7, 2026).

Lower 10% CA$356Median CA$587Upper 10% CA$1,701

Middle half listed between CA$419 to CA$837

Certificated stones with a recently confirmed price only, 11,856 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

As of November 7, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 21% 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.

  4. 4Rare Carat6,386 in stock
    United States·Founded 2016·GCAL, GIA, IGI·30-day returns·Ships to Canada
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  6. 6B2C Jewels5,950 in stock
    United States·Founded 2004·GIA, IGI·30-day returns·Ships to Canada
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  7. 7Adiamor5,669 in stock
    United States·Founded 1999·GCAL, GIA, IGI·Ships to Canada
    Terms not yet verified
    Visit Adiamor
Show 71 more retailers
  1. 11Yorxs4,289 in stock
    Germany·Founded 2011·GIA, HRD, IGI
    Terms not yet verified
    Visit Yorxs
  4. 14Cape Diamonds3,672 in stock
    South Africa·Founded 2005·GIA, IGI·7-day returns·Ships to Canada
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  7. 17

    Steven Stone

    2,930 in stock
    UK·GCAL, GIA, IGI
    Terms not yet verified
  10. 20

    Luvansh

    2,512 in stock
    US
    Terms not yet verified
  11. 21RockHer2,481 in stock
    United States·Founded 2016·GIA, IGI·Ships to Canada
    Terms not yet verified
    Visit RockHer
  17. 27

    SJ Gems

    1,302 in stock
    ZA·GIA, IGI
    Terms not yet verified
  24. 34GemsNY698 in stock
    United States·Founded 1988·GCAL, GIA, IGI·Ships to Canada
    Terms not yet verified
    Visit GemsNY
  26. 36Blue Nile493 in stock
    United States·Founded 1999·GCAL, GIA, IGI·Ships to Canada
    Terms not yet verified
    Visit Blue Nile
  28. 38

    Keyzar

    463 in stock
    US·GIA, IGI
    Terms not yet verified
  29. 39

    Reeds

    451 in stock
    US·GCAL, IGI
    Terms not yet verified
  30. 40Allurez436 in stock
    United States·Founded 2010·GIA, IGI·Ships to Canada
    Terms not yet verified
    Visit Allurez
  32. 42

    deBebians

    372 in stock
    US·GCAL, GIA, IGI
    Terms not yet verified
  36. 46

    The Perfect Carat

    230 in stock
    US·GIA, IGI
    Terms not yet verified
  38. 48Jared224 in stock
    United States·Founded 1993·GCAL, GIA, IGI
    Terms not yet verified
    Visit Jared
  39. 49Zales210 in stock
    United States·Founded 1924·GCAL, GIA, IGI
    Terms not yet verified
    Visit Zales
  42. 52NZ Jewellers188 in stock
    New Zealand·Founded 2006·IGI·30-day returns·Ships to Canada
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  43. 53

    Liori Diamonds

    171 in stock
    US·GIA, IGI
    Terms not yet verified
  45. 55ZCOVA82 in stock
    Malaysia·Founded 2015·IGI·Ships to Canada
    Terms not yet verified
    Visit ZCOVA
  48. 58

    GemTrove

    57 in stock
    AU·GIA, IGI
    Terms not yet verified
  50. 60

    Washington Diamond

    51 in stock
    US·GIA, IGI
    Terms not yet verified
  54. 6425karats17 in stock
    United States·Founded 2008·IGI·60-day returns·Ships to Canada
    Terms read on the retailer’s own site, June 15, 2026
    Visit 25karats
  55. 65VRAI13 in stock
    United States·Founded 2014·IGI·Ships to Canada
    Terms not yet verified
    Visit VRAI
  56. 66

    Distinctive Gem

    11 in stock
    US·IGI
    Terms not yet verified
  57. 67

    Laura Preshong

    10 in stock
    US·GCAL
    Terms not yet verified
  61. 71

    Lauren B

    4 in stock
    US·IGI
    Terms not yet verified
  63. 73

    Whiteflash

    2 in stock
    US·GIA, IGI
    Terms not yet verified
  66. 76

    Diamovida

    1 in stock
    CA·IGI·Ships to Canada
    Terms not yet verified
  67. 77

    Good Old Gold

    1 in stock
    US·IGI
    Terms not yet verified
  68. 78Ritani1 in stock
    United States·Founded 1999·GIA·Ships to Canada
    Terms not yet verified
    Visit Ritani
  69. 79

    Robbins Brothers

    1 in stock
    US·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.

41 of the 64 retailers with shipping details ship to Canada. 23 do not. 17 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 VVS221,111 · 62rE VVS216,186 · 63rE VS114,181 · 63rD VS112,877 · 58rD VVS112,081 · 58rE VVS15,221 · 59rF VS15,084 · 59rF VVS24,874 · 55rD VS23,025 · 53rE VS22,894 · 55rG VS12,474 · 52rD IF2,298 · 47rD FL2,192 · 42rG VVS21,625 · 49rF VS21,448 · 50rF VVS11,151 · 48rG VS2807 · 40rD SI1757 · 41rE IF668 · 46rE SI1610 · 38rH VS1583 · 41rE FL290 · 29rH VVS2257 · 35rF SI1209 · 30rG VVS1179 · 33rH VS2174 · 30rG SI1155 · 26rF IF127 · 27rG IF78 · 35rI VS164 · 24rG SI260 · 17rH SI156 · 19rD SI249 · 23rI SI149 · 17rI VS248 · 24rH VVS146 · 18rE SI238 · 15rF SI234 · 18rJ VS134 · 13rF FL30 · 21rJ VS224 · 10rI VVS223 · 8rJ VVS217 · 9rK VVS215 · 14rK VS112 · 8r

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

  • Cushion: a softened-corner square or rectangle with a vintage feel.
  • 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 7, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 21% 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 45 color 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.