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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, 57 of them, across 1,422 live listings.

Updated September 14, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

1,422

Retailers carrying

57

Median active price

$37,776

Grade combinations

26

Certificate mix:GIA 1,142 · IGI 124 · HRD 25

What it actually costs

Lower 10% $17,186Median $37,776Upper 10% $59,909

Middle half sell between $24,728 to $49,505

Certificated stones with a live price only, 627 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

27%

Typical difference

$9,740

Stones compared

434

Across 434 stones of this size and shape carried by more than one retailer, the dearest listing sits 27% above the cheapest for the identical certificated diamond, a typical gap of $9,740. 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.

Show 15 more retailers
  5. 15Adiamor33 in stock
    United States·Founded 1999·30-day returns·Ships to United States
    Visit Adiamor
  14. 24RockHer24 in stock
    United States·Founded 2016·40-day returns·Ships to United States
    Visit RockHer
  15. 25Zales24 in stock
    United States·Founded 1924·30-day returns·Ships to United States
    Visit Zales

Stock counts are updated daily. Founded, return window and shipping details are retailer-provided and were last verified March 7, 2026.

13 of the 25 retailers ship to United States. 12 do not.

Narrow it down by grade

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

D VS1104 · 38rD VS2100 · 40rE VS186 · 43rH VS282 · 31rF VS280 · 37rI VS180 · 25rI VVS172 · 31rI VS271 · 24rG VVS163 · 34rE VS259 · 34rI VVS254 · 28rH VVS152 · 31rD FL49 · 24rG VS248 · 23rG VS146 · 26rF VVS143 · 25rD VVS143 · 30rF VS141 · 20rD IF41 · 21rF IF38 · 27rH VS129 · 16rH IF26 · 15rE IF25 · 15rF VVS221 · 14rG IF19 · 17rH VVS212 · 5r

Stones at this spec now

Live 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 434 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 27%, about $9,740.

Can I see retailers for one exact grade?

Yes. Each of the 26 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?

Live listings refresh daily. 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 3ct Natural Marquise Diamonds | Carat Hunter