CaratHunter
Plans

Carat Hunter · Where to buy diamonds

Where to buy a 1.5ct lab-grown marquise diamond

Every retailer in our index stocking this size and shape, 60 of them, across 138,447 current listings.

Updated October 29, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

138,447

Retailers carrying

60

Median confirmed price

$375

Grade combinations

29

Certificate mix:IGI 134,559 · GCAL 795 · GIA 310 · HRD 9

What it actually costs

Half of these diamonds are listed between $265 and $646 (as of October 29, 2026).

Lower 10% $252Median $375Upper 10% $1,210

Middle half listed between $265 to $646

Certificated stones with a recently confirmed price only, 11,776 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

345%

Typical difference

$1,155

Stones compared

9,511

Across 9,511 stones of this size and shape carried by more than one retailer, the dearest listing sits 345% above the cheapest for the identical certificated diamond, a typical gap of $1,155. 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.

  1. 1Rare Carat9,376 in stock
    United States·Founded 2016·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  7. 7NZ Jewellers4,980 in stock
    New Zealand·Founded 2006·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  9. 9Brilliance4,745 in stock
    United States·Founded 2002·30-day returns·Ships to United States
    Terms not yet verified
    Visit Brilliance
Show 15 more retailers
  2. 12Moon Ocean4,426 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to United States
    Terms not yet verified
    Visit Moon Ocean
  3. 13B2C Jewels4,248 in stock
    United States·Founded 2004·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  4. 14Adiamor4,170 in stock
    United States·Founded 1999·30-day returns·Ships to United States
    Terms not yet verified
    Visit Adiamor
  6. 16

    The Perfect Carat

    3,995 in stock
    US
    Terms not yet verified
  7. 17Aurelinne3,918 in stock
    United States·Founded 2021·30-day returns·Ships to United States
    Terms not yet verified
    Visit Aurelinne
  8. 18Cape Diamonds3,360 in stock
    South Africa·Founded 2005·7-day returns·Ships to United States
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  11. 21GemsNY3,127 in stock
    United States·Founded 1988·30-day returns·Ships to United States
    Terms not yet verified
    Visit GemsNY
  12. 22Yorxs2,942 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.

19 of the 25 retailers ship to United States. 6 do not.

Narrow it down by grade

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

E VVS225,344 · 57rE VS117,988 · 54rD VVS217,203 · 57rD VVS112,300 · 55rD VS110,752 · 53rF VVS29,560 · 56rD FL8,080 · 43rE VVS17,537 · 52rD IF7,471 · 48rF VS16,258 · 49rE VS25,723 · 44rD VS22,370 · 47rE IF1,479 · 44rF VVS11,459 · 51rG VVS21,389 · 43rF VS21,349 · 40rG VS1761 · 38rE FL599 · 34rF IF169 · 31rH VS1149 · 25rG VS2141 · 32rG IF101 · 28rG VVS180 · 29rH VVS267 · 20rH VS237 · 10rH VVS130 · 7rI VS216 · 12rF FL14 · 14rI VVS212 · 5r

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?

Across 9,511 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 345%, about $1,155.

Can I see retailers for one exact grade?

Yes. Each of the 29 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.

Where to Buy 1.5ct Lab Grown Marquise Diamonds | Carat Hunter