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Carat Hunter · Where to buy diamonds

Where to buy a 3ct natural round diamond

Every retailer in our index stocking this size and shape, 64 of them, across 16,530 live listings.

Updated September 18, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

16,530

Retailers carrying

64

Median active price

NZ$51,854

Grade combinations

33

Certificate mix:GIA 12,842 · IGI 1,680 · HRD 667

What it actually costs

Lower 10% NZ$26,245Median NZ$51,854Upper 10% NZ$105,167

Middle half sell between NZ$34,970 to NZ$74,412

Certificated stones with a live price only, 8,515 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

34%

Typical difference

NZ$15,351

Stones compared

4,971

Across 4,971 stones of this size and shape carried by more than one retailer, the dearest listing sits 34% above the cheapest for the identical certificated diamond, a typical gap of NZ$15,351. 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 June 15, 2026.

Narrow it down by grade

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

I VS21,599 · 51rH VS21,396 · 54rI VS11,266 · 52rH VS11,013 · 50rG VS1761 · 51rF VS2748 · 51rH VVS2691 · 50rI VVS2681 · 48rE VS2681 · 48rG VVS2623 · 50rF VS1595 · 50rH VVS1575 · 47rG VS2543 · 48rG VVS1513 · 47rI VVS1488 · 45rE VS1455 · 48rD VS2436 · 51rD VS1423 · 46rD VVS2382 · 46rE VVS2351 · 49rD VVS1343 · 44rE VVS1308 · 45rF VVS1274 · 40rF VVS2272 · 43rD IF234 · 39rF IF218 · 44rI IF200 · 39rG IF123 · 32rD FL121 · 26rH IF104 · 33rE IF81 · 27rF FL20 · 17rE FL12 · 9r

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

  • Round: the most common cut, with the highest light return per 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 4,971 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 34%, about NZ$15,351.

Can I see retailers for one exact grade?

Yes. Each of the 33 colour 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 Round Diamonds | Carat Hunter