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Carat Hunter · Where to buy diamonds

Where to buy a 3ct natural marquise diamond

Every retailer in our index stocking this size and shape, 64 of them, across 2,187 current listings.

Updated October 31, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

2,187

Retailers carrying

64

Median confirmed price

€32,790

Grade combinations

28

Certificate mix:GIA 1,734 · IGI 287 · HRD 32

What it actually costs

Half of these diamonds are listed between €21,755 and €42,482 (as of October 31, 2026).

Lower 10% €15,154Median €32,790Upper 10% €54,097

Middle half listed between €21,755 to €42,482

Certificated stones with a recently confirmed price only, 534 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

55%

Typical difference

€14,361

Stones compared

431

Across 431 stones of this size and shape carried by more than one retailer, the dearest listing sits 55% above the cheapest for the identical certificated diamond, a typical gap of €14,361. 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. 1NZ Jewellers131 in stock
    New Zealand·Founded 2006·30-day returns·Ships to European Union
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  2. 2Aurelinne118 in stock
    United States·Founded 2021·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Aurelinne
  7. 7Yorxs88 in stock
    Germany·Founded 2011·100-day returns·Ships to European Union
    Terms not yet verified
    Visit Yorxs
  9. 9Rare Carat77 in stock
    United States·Founded 2016·30-day returns·Ships to European Union
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  10. 10

    The Perfect Carat

    71 in stock
    US
    Terms not yet verified
Show 15 more retailers
  1. 11B2C Jewels71 in stock
    United States·Founded 2004·30-day returns·Ships to European Union
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  2. 12Moon Ocean63 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Moon Ocean
  10. 20Blue Nile45 in stock
    United States·Founded 1999·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Blue Nile
  11. 21Cape Diamonds43 in stock
    South Africa·Founded 2005·7-day returns·Ships to European Union
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  12. 22RockHer42 in stock
    United States·Founded 2016·40-day returns·Ships to European Union
    Terms not yet verified
    Visit RockHer

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.

20 of the 25 retailers ship to European Union. 5 do not.

Narrow it down by grade

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

D VS2184 · 47rD VS1142 · 45rF VS2132 · 47rI VVS2122 · 40rI VS2120 · 29rI VVS1112 · 37rG VS2106 · 40rH VS2105 · 35rI VS1102 · 27rF VS199 · 40rE VS191 · 43rD FL84 · 27rH VVS183 · 40rG VVS178 · 38rE VS267 · 34rD VVS166 · 39rD IF63 · 27rF IF62 · 38rH VS162 · 29rG VS149 · 35rF VVS137 · 22rH VVS234 · 25rF VVS233 · 23rI IF31 · 22rG IF28 · 25rH IF27 · 17rD VVS222 · 18rE IF17 · 12r

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.
  • Natural: mined diamonds with the certification, provenance and resale profile traditional buyers expect.

Frequently asked

How much do retailers differ on the same diamond?

Across 431 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 55%, about €14,361.

Can I see retailers for one exact grade?

Yes. Each of the 28 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.