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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 2,181 current listings.

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

The market at this size and shape

Active listings

2,181

Retailers carrying

64

Median confirmed price

$36,431

Grade combinations

28

Certificate mix:GIA 1,728 · IGI 289 · HRD 29

What it actually costs

Half of these diamonds are listed between $24,220 and $47,721 (as of October 29, 2026).

Lower 10% $16,892Median $36,431Upper 10% $61,786

Middle half listed between $24,220 to $47,721

Certificated stones with a recently confirmed price only, 520 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

54%

Typical difference

$15,462

Stones compared

410

Across 410 stones of this size and shape carried by more than one retailer, the dearest listing sits 54% above the cheapest for the identical certificated diamond, a typical gap of $15,462. 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 Jewellers126 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
  2. 2Aurelinne113 in stock
    United States·Founded 2021·30-day returns·Ships to United States
    Terms not yet verified
    Visit Aurelinne
  6. 6Yorxs90 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs
  8. 8Rare Carat79 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
  10. 10B2C Jewels75 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
Show 15 more retailers
  1. 11

    The Perfect Carat

    69 in stock
    US
    Terms not yet verified
  10. 20Blue Nile44 in stock
    United States·Founded 1999·30-day returns·Ships to United States
    Terms not yet verified
    Visit Blue Nile
  11. 21RockHer43 in stock
    United States·Founded 2016·40-day returns·Ships to United States
    Terms not yet verified
    Visit RockHer
  12. 22Cape Diamonds43 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.

20 of the 25 retailers ship to United States. 5 do not.

Narrow it down by grade

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

D VS2187 · 45rD VS1136 · 44rF VS2133 · 47rI VVS2121 · 39rI VS2116 · 30rI VVS1112 · 37rG VS2105 · 41rI VS1102 · 28rF VS1100 · 40rH VS294 · 32rE VS192 · 43rD FL83 · 27rG VVS178 · 38rH VVS177 · 39rD VVS175 · 39rG VS164 · 40rH VS163 · 29rD IF62 · 27rF IF62 · 38rE VS262 · 33rF VVS137 · 22rF VVS233 · 23rI IF33 · 23rH VVS231 · 24rG IF28 · 25rH IF27 · 17rD VVS222 · 18rE IF18 · 13r

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 410 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 54%, about $15,462.

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.