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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 15,772 live listings.

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

The market at this size and shape

Active listings

15,772

Retailers carrying

64

Median active price

A$46,373

Grade combinations

32

Certificate mix:GIA 12,275 · IGI 1,549 · HRD 615

What it actually costs

Lower 10% A$23,420Median A$46,373Upper 10% A$92,937

Middle half sell between A$31,266 to A$66,495

Certificated stones with a live price only, 8,364 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

30%

Typical difference

A$11,934

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 A$11,934. 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.

3 of the 25 retailers ship to Australia. 22 do not.

Narrow it down by grade

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

I VS21,512 · 51rH VS21,342 · 54rI VS11,209 · 52rH VS1947 · 50rF VS2735 · 51rG VS1677 · 53rE VS2672 · 49rH VVS2668 · 49rI VVS2652 · 47rG VVS2591 · 49rF VS1556 · 50rH VVS1541 · 46rG VS2525 · 48rG VVS1491 · 47rI VVS1463 · 44rE VS1445 · 49rD VS2427 · 51rD VS1404 · 46rD VVS2366 · 46rE VVS2339 · 48rD VVS1329 · 44rE VVS1289 · 45rF VVS2271 · 44rF VVS1261 · 40rD IF227 · 38rF IF205 · 45rI IF191 · 39rG IF119 · 32rD FL114 · 26rH IF102 · 32rE IF75 · 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 A$11,934.

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.