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Carat Hunter · Where to buy diamonds

Where to buy a 1ct lab-grown marquise diamond

Every retailer in our index stocking this size and shape, 61 of them, across 175,978 current listings.

Updated October 28, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

175,978

Retailers carrying

61

Median confirmed price

$302

Grade combinations

30

Certificate mix:IGI 169,511 · GCAL 824 · GIA 625 · HRD 22

What it actually costs

Half of these diamonds are listed between $207 and $486 (as of October 28, 2026).

Lower 10% $187Median $302Upper 10% $806

Middle half listed between $207 to $486

Certificated stones with a recently confirmed price only, 15,395 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

327%

Typical difference

$856

Stones compared

11,904

Across 11,904 stones of this size and shape carried by more than one retailer, the dearest listing sits 327% above the cheapest for the identical certificated diamond, a typical gap of $856. 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. 2Rare Carat9,642 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
  4. 4NZ Jewellers7,855 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
  10. 10Aurelinne7,091 in stock
    United States·Founded 2021·30-day returns·Ships to United States
    Terms not yet verified
    Visit Aurelinne
Show 15 more retailers
  1. 11Adiamor6,954 in stock
    United States·Founded 1999·30-day returns·Ships to United States
    Terms not yet verified
    Visit Adiamor
  2. 12B2C Jewels6,788 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
  3. 13Moon Ocean6,295 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to United States
    Terms not yet verified
    Visit Moon Ocean
  4. 14

    The Perfect Carat

    6,184 in stock
    US
    Terms not yet verified
  8. 18Yorxs5,062 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs
  9. 19Cape Diamonds5,043 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

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.

D VVS229,928 · 54rE VVS224,137 · 53rD VVS118,949 · 54rE VS117,165 · 54rD VS115,505 · 54rD IF13,159 · 51rD FL12,843 · 39rE VVS110,679 · 54rF VVS27,115 · 52rE VS25,176 · 45rF VS14,887 · 51rD VS23,481 · 47rE IF2,566 · 49rG VS12,101 · 41rG VVS21,984 · 42rF VVS11,944 · 46rF VS21,246 · 40rH VS1727 · 34rG VS2693 · 32rE FL431 · 36rH VVS2379 · 31rH VS2200 · 27rG VVS1187 · 37rF IF167 · 39rI VS1161 · 20rI VS266 · 17rH VVS135 · 18rI VVS225 · 17rF FL21 · 17rI VVS117 · 17r

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 11,904 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 327%, about $856.

Can I see retailers for one exact grade?

Yes. Each of the 30 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.