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Carat Hunter · Where to buy diamonds

Where to buy a 3ct natural radiant diamond

Every retailer in our index stocking this size and shape, 71 of them, across 12,132 current listings.

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

The market at this size and shape

Active listings

12,132

Retailers carrying

71

Median confirmed price

A$45,103

Grade combinations

53

Certificate mix:GIA 10,414 · IGI 317 · HRD 284 · AGS 5

What it actually costs

Half of these diamonds are listed between A$30,521 and A$59,732 (as of November 6, 2026).

Lower 10% A$19,794Median A$45,103Upper 10% A$73,550

Middle half listed between A$30,521 to A$59,732

Certificated stones with a recently confirmed price only, 1,379 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 Jewellers731 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. 2Aurelinne648 in stock
    United States·Founded 2021·EGL, GIA, HRD, IGI·Ships to Australia
    Terms not yet verified
    Visit Aurelinne
  3. 3Allurez630 in stock
    United States·Founded 2010·EGL, GIA, IGI·Ships to Australia
    Terms not yet verified
    Visit Allurez
  4. 4Carbon Sparkle620 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
  6. 6Rare Carat508 in stock
    United States·Founded 2016·GIA, IGI·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  7. 7Yorxs490 in stock
    Germany·Founded 2011·GIA, HRD, IGI
    Terms not yet verified
    Visit Yorxs
  8. 8

    The Perfect Carat

    486 in stock
    US·EGL, GIA, HRD, IGI
    Terms not yet verified
Show 61 more retailers
  1. 11B2C Jewels373 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
  8. 18Zales236 in stock
    United States·Founded 1924·AGS, GIA
    Terms not yet verified
    Visit Zales
  9. 19Jared229 in stock
    United States·Founded 1993·AGS, GIA
    Terms not yet verified
    Visit Jared
  18. 28Cape Diamonds181 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
  24. 34RockHer148 in stock
    United States·Founded 2016·GIA, IGI·Ships to Australia
    Terms not yet verified
    Visit RockHer
  28. 38

    Washington Diamond

    111 in stock
    US·GIA
    Terms not yet verified
  33. 43

    GemTrove

    62 in stock
    AU·GIA, HRD, IGI·Ships to Australia
    Terms not yet verified
  37. 47GemsNY43 in stock
    United States·Founded 1988·GIA·Ships to Australia
    Terms not yet verified
    Visit GemsNY
  53. 63ZCOVA3 in stock
    Malaysia·Founded 2015·GIA·Ships to Australia
    Terms not yet verified
    Visit ZCOVA
  59. 69

    Lauren B

    1 in stock
    US
    Terms not yet verified
  61. 71

    USA Jewels

    1 in stock
    US·GIA
    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.

44 of the 66 retailers with shipping details ship to Australia. 22 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.

G SI1633 · 50rI SI1539 · 51rH SI1531 · 47rI VS1481 · 48rH SI2473 · 46rF SI1450 · 42rH VS2427 · 54rD SI1407 · 50rI VS2405 · 48rJ SI2400 · 42rE SI1377 · 46rF VS2351 · 50rI SI2345 · 41rF SI2328 · 40rD VS2319 · 52rG VS2317 · 50rG SI2296 · 38rE VS1291 · 47rJ SI1280 · 45rJ VS1268 · 40rJ VS2264 · 44rE VS2244 · 45rE SI2243 · 37rD SI2241 · 35rG VS1226 · 50rF VS1219 · 42rH VVS2212 · 54rK SI2193 · 33rI VVS2182 · 41rH VS1180 · 48rK VS1178 · 37rG VVS1173 · 45rK SI1169 · 33rJ VVS2159 · 41rG VVS2157 · 42rK VS2133 · 28rI VVS1122 · 44rK VVS2114 · 35rD VS1102 · 38rH VVS186 · 32rJ VVS185 · 35rD VVS284 · 40rD VVS171 · 35rE VVS270 · 37rF VVS168 · 32rF VVS245 · 26rJ IF42 · 34rE IF41 · 23rK VVS133 · 13rE VVS122 · 21rH IF21 · 14rD IF11 · 8rF IF10 · 9r

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

  • Radiant: a rectangular brilliant cut that combines the emerald outline with round-style faceting.
  • 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 53 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.