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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, 58 of them, across 1,513 live listings.

Updated September 19, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

1,513

Retailers carrying

58

Median active price

CA$49,469

Grade combinations

26

Certificate mix:GIA 1,204 · IGI 152 · HRD 27

What it actually costs

Lower 10% CA$22,773Median CA$49,469Upper 10% CA$81,598

Middle half sell between CA$31,000 to CA$66,176

Certificated stones with a live price only, 642 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

33%

Typical difference

CA$15,962

Stones compared

450

Across 450 stones of this size and shape carried by more than one retailer, the dearest listing sits 33% above the cheapest for the identical certificated diamond, a typical gap of CA$15,962. 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

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

5 of the 25 retailers ship to Canada. 20 do not.

Narrow it down by grade

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

D VS1106 · 39rD VS296 · 38rI VS191 · 26rE VS189 · 43rH VS286 · 32rF VS283 · 37rI VS280 · 25rI VVS180 · 33rH VVS167 · 36rE VS266 · 36rG VVS163 · 34rI VVS262 · 29rG VS260 · 31rD FL50 · 24rD VVS147 · 31rF VVS144 · 25rG VS144 · 25rD IF42 · 21rF VS142 · 21rF IF41 · 27rH IF31 · 16rH VS130 · 16rG IF21 · 19rE IF21 · 13rF VVS220 · 14rH VVS213 · 6r

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 450 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 33%, about CA$15,962.

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