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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 15,914 live listings.

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

The market at this size and shape

Active listings

15,914

Retailers carrying

64

Median active price

£23,741

Grade combinations

32

Certificate mix:GIA 12,395 · IGI 1,563 · HRD 624

What it actually costs

Lower 10% £11,993Median £23,741Upper 10% £47,623

Middle half sell between £16,020 to £34,047

Certificated stones with a live price only, 8,374 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

30%

Typical difference

£6,109

Stones compared

4,866

Across 4,866 stones of this size and shape carried by more than one retailer, the dearest listing sits 30% above the cheapest for the identical certificated diamond, a typical gap of £6,109. 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 VS21,526 · 51rH VS21,357 · 54rI VS11,219 · 52rH VS1961 · 50rF VS2741 · 51rG VS1685 · 53rE VS2679 · 49rH VVS2674 · 49rI VVS2660 · 47rG VVS2602 · 49rF VS1561 · 50rH VVS1546 · 46rG VS2527 · 48rG VVS1496 · 47rI VVS1465 · 44rE VS1448 · 49rD VS2429 · 51rD VS1406 · 46rD VVS2367 · 46rE VVS2342 · 48rD VVS1332 · 44rE VVS1291 · 45rF VVS2271 · 44rF VVS1264 · 40rD IF227 · 38rF IF205 · 45rI IF192 · 39rG IF121 · 32rD FL114 · 26rH IF103 · 32rE IF76 · 25rF FL20 · 17r

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 4,866 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 30%, about £6,109.

Can I see retailers for one exact grade?

Yes. Each of the 32 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.