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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, 66 of them, across 9,571 current listings.

Updated November 1, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

9,571

Retailers carrying

66

Median confirmed price

A$40,117

Grade combinations

31

Certificate mix:GIA 8,469 · HRD 178 · IGI 127 · AGS 3

What it actually costs

Half of these diamonds are listed between A$26,086 and A$54,598 (as of November 1, 2026).

Lower 10% A$16,412Median A$40,117Upper 10% A$70,030

Middle half listed between A$26,086 to A$54,598

Certificated stones with a recently confirmed price only, 3,233 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

52%

Typical difference

A$17,123

Stones compared

2,272

Across 2,272 stones of this size and shape carried by more than one retailer, the dearest listing sits 52% above the cheapest for the identical certificated diamond, a typical gap of A$17,123. 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.

  3. 3Yorxs499 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs
  4. 4Rare Carat451 in stock
    United States·Founded 2016·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  5. 5B2C Jewels377 in stock
    United States·Founded 2004·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  6. 6Blue Nile342 in stock
    United States·Founded 1999·30-day returns·Ships to Australia
    Terms not yet verified
    Visit Blue Nile
Show 15 more retailers
  2. 12RockHer265 in stock
    United States·Founded 2016·40-day returns·Ships to Australia
    Terms not yet verified
    Visit RockHer
  5. 15Cape Diamonds226 in stock
    South Africa·Founded 2005·7-day returns·Ships to Australia
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  8. 18Allurez214 in stock
    United States·Founded 2010·30-day returns·Ships to Australia
    Terms not yet verified
    Visit Allurez
  9. 19Zales208 in stock
    United States·Founded 1924·30-day returns
    Terms not yet verified
    Visit Zales
  10. 20Jared207 in stock
    United States·Founded 1993·30-day returns
    Terms not yet verified
    Visit Jared

Stock counts are updated daily. Founded and shipping details come from public sources. Return terms are our summary of each retailer's own policy page, dated per retailer above. Retailers change their terms, so check the retailer's own returns and shipping pages before you buy.

16 of the 25 retailers ship to Australia. 9 do not.

Narrow it down by grade

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

H VS2876 · 54rI VS2837 · 49rI VS1765 · 48rG VS2652 · 52rG VS1619 · 57rD VS1561 · 55rH VS1540 · 53rF VS2500 · 49rD VS2497 · 47rE VS2485 · 51rE VS1408 · 49rF VS1400 · 48rG VVS2370 · 54rI VVS2270 · 45rH VVS1228 · 50rG VVS1182 · 42rF VVS2171 · 45rH VVS2167 · 39rD VVS2144 · 42rE VVS2140 · 43rF VVS1137 · 44rI VVS1132 · 37rD VVS1125 · 38rD IF119 · 35rE VVS171 · 29rI IF39 · 20rH IF35 · 23rE IF34 · 31rF IF25 · 19rD FL21 · 15rG IF19 · 16r

Stones at this spec now

Current 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 2,272 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 52%, about A$17,123.

Can I see retailers for one exact grade?

Yes. Each of the 31 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?

Listings refresh as we re-read each retailer, most of them every day. 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