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Carat Hunter · Where to buy diamonds

Where to buy a 3ct natural cushion diamond

Every retailer in our index stocking this size and shape, 64 of them, across 7,454 live listings.

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

The market at this size and shape

Active listings

7,454

Retailers carrying

64

Median active price

£24,487

Grade combinations

30

Certificate mix:GIA 6,504 · HRD 141 · IGI 71 · AGS 2

What it actually costs

Lower 10% £9,723Median £24,487Upper 10% £40,931

Middle half sell between £15,808 to £33,670

Certificated stones with a live price only, 3,667 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

26%

Typical difference

£5,687

Stones compared

2,137

Across 2,137 stones of this size and shape carried by more than one retailer, the dearest listing sits 26% above the cheapest for the identical certificated diamond, a typical gap of £5,687. 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.

H VS2771 · 46rI VS2568 · 41rG VS2524 · 44rI VS1523 · 45rG VS1476 · 51rH VS1471 · 47rE VS2407 · 44rF VS2398 · 45rD VS2363 · 47rF VS1359 · 46rD VS1357 · 44rE VS1355 · 42rG VVS2337 · 47rI VVS2232 · 38rG VVS1151 · 36rH VVS2144 · 32rH VVS1139 · 34rF VVS2124 · 40rF VVS1105 · 36rE VVS299 · 37rD VVS292 · 35rI VVS189 · 26rD IF85 · 29rD VVS169 · 30rE VVS149 · 25rD FL48 · 14rE IF34 · 26rG IF28 · 20rH IF28 · 18rF IF23 · 13r

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

  • Cushion: a softened-corner square or rectangle with a vintage feel.
  • 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 2,137 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 26%, about £5,687.

Can I see retailers for one exact grade?

Yes. Each of the 30 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 Cushion Diamonds | Carat Hunter