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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, 73 of them, across 55,942 current listings.

Updated November 6, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

55,942

Retailers carrying

73

Median confirmed price

A$43,445

Grade combinations

58

Certificate mix:GIA 40,535 · IGI 7,125 · HRD 3,479 · AGS 6

What it actually costs

Half of these diamonds are listed between A$29,931 and A$64,476 (as of November 6, 2026).

Lower 10% A$21,961Median A$43,445Upper 10% A$95,553

Middle half listed between A$29,931 to A$64,476

Certificated stones with a recently confirmed price only, 6,230 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

As of November 6, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 20% more for natural ones (the median across stones listed by two or more retailers). Comparing shows you the cheapest of the retailers listing the same stone.

Every retailer that stocks this spec

Ranked by active inventory count. Selection is mechanical, not editorial.

  1. 1NZ Jewellers4,491 in stock
    New Zealand·Founded 2006·EGL, GIA, HRD, IGI·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  2. 2Carbon Sparkle4,020 in stock
    United States·EGL, GIA, HRD, IGI·21-day returns·Ships to Australia
    Terms read on the retailer’s own site, September 2, 2026
    Visit Carbon Sparkle
  3. 3Yorxs3,035 in stock
    Germany·Founded 2011·GIA, HRD, IGI
    Terms not yet verified
    Visit Yorxs
  4. 4Aurelinne2,955 in stock
    United States·Founded 2021·EGL, GIA, HRD, IGI·Ships to Australia
    Terms not yet verified
    Visit Aurelinne
  6. 6

    The Perfect Carat

    2,701 in stock
    US·EGL, GIA, HRD, IGI
    Terms not yet verified
  8. 8Rare Carat2,490 in stock
    United States·Founded 2016·GIA, HRD, IGI·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  9. 9Allurez2,291 in stock
    United States·Founded 2010·GIA, HRD, IGI·Ships to Australia
    Terms not yet verified
    Visit Allurez
  10. 10B2C Jewels1,854 in stock
    United States·Founded 2004·AGS, GIA, HRD, IGI·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
Show 63 more retailers
  3. 13Brilliance1,422 in stock
    United States·Founded 2002·EGL, GIA, HRD, IGI·Ships to Australia
    Terms not yet verified
    Visit Brilliance
  7. 17Cape Diamonds951 in stock
    South Africa·Founded 2005·GIA, IGI·7-day returns·Ships to Australia
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  8. 18RockHer902 in stock
    United States·Founded 2016·GIA, IGI·Ships to Australia
    Terms not yet verified
    Visit RockHer
  19. 29Jared565 in stock
    United States·Founded 1993·AGS, GIA, IGI
    Terms not yet verified
    Visit Jared
  23. 33Zales520 in stock
    United States·Founded 1924·AGS, GIA, IGI
    Terms not yet verified
    Visit Zales
  44. 54GemsNY100 in stock
    United States·Founded 1988·GIA, IGI·Ships to Australia
    Terms not yet verified
    Visit GemsNY
  45. 55

    GemTrove

    82 in stock
    AU·GIA, HRD, IGI·Ships to Australia
    Terms not yet verified
  55. 65

    Lauren B

    8 in stock
    US
    Terms not yet verified
  56. 66ZCOVA8 in stock
    Malaysia·Founded 2015·GIA·Ships to Australia
    Terms not yet verified
    Visit ZCOVA
  58. 68

    Whiteflash

    4 in stock
    US·GIA
    Terms not yet verified
  63. 73

    Distinctive Gem

    1 in stock
    US
    Terms not yet verified

Stock counts reflect current listings. 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.

45 of the 68 retailers with shipping details ship to Australia. 23 do not. 5 retailers have not published any shipping details.

Narrow it down by grade

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

J SI22,924 · 49rJ SI12,626 · 53rI SI22,465 · 50rH SI22,204 · 51rI SI12,159 · 57rG SI22,138 · 55rI VS21,979 · 55rK SI21,850 · 40rH VS21,838 · 63rK SI11,750 · 44rI VS11,631 · 57rH SI11,616 · 60rF SI21,563 · 52rE SI21,518 · 51rJ VS21,514 · 54rJ VS11,479 · 52rD SI21,248 · 52rH VS11,203 · 59rD SI11,123 · 54rK VS21,072 · 39rG SI11,037 · 55rH VVS2987 · 57rG VS1933 · 58rF SI1928 · 58rH VVS1906 · 58rF VS2889 · 58rI VVS2870 · 55rJ VVS2789 · 45rG VVS2781 · 56rF VS1753 · 56rG VS2748 · 57rK VS1739 · 40rE SI1691 · 50rE VS2654 · 57rD VS2630 · 57rG VVS1594 · 53rD VS1568 · 53rK VVS2551 · 41rE VS1527 · 52rJ VVS1510 · 50rI VVS1480 · 45rK VVS1413 · 37rD VVS2402 · 54rF VVS1391 · 47rE VVS2387 · 55rE VVS1376 · 48rF VVS2360 · 50rD VVS1330 · 54rD IF283 · 48rJ IF243 · 46rF IF234 · 50rI IF213 · 41rH IF207 · 41rK IF198 · 28rG IF139 · 34rE IF128 · 32rD FL127 · 35rE FL42 · 30r

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

  • 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?

As of November 6, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 20% more for natural ones (the median across stones listed by two or more retailers). Comparing shows you the cheapest of the retailers listing the same stone.

Can I see retailers for one exact grade?

Yes. Each of the 58 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.