Where to buy a 1.25ct natural round diamond

Half of these diamonds are listed between A$4,386 and A$10,149 (as of November 6, 2026).

Certificated stones with a recently confirmed price only, 20,259 of them. Each contributes its cheapest confirmed price.

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.

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

1. 1NZ Jewellers17,304 in stock

   New Zealand·Founded 2006·EGL, GIA, GSI, HRD·30-day returns·Ships to Australia

   Terms read on the retailer’s own site, October 19, 2026

   Visit NZ Jewellers
2. 2Carbon Sparkle16,148 in stock

   United States·EGL, GIA, GSI, HRD·21-day returns·Ships to Australia

   Terms read on the retailer’s own site, September 2, 2026

   Visit Carbon Sparkle
3. 3Aurelinne11,006 in stock

   United States·Founded 2021·EGL, GIA, GSI, HRD·Ships to Australia

   Terms not yet verified

   Visit Aurelinne
4. 4

   The Perfect Carat

   10,215 in stock

   US·EGL, GIA, GSI, HRD

   Terms not yet verified
5. 5Yorxs9,888 in stock

   Germany·Founded 2011·GIA, HRD, IGI

   Terms not yet verified

   Visit Yorxs
6. 6MOH London9,130 in stock

   United Kingdom·EGL, GIA, HRD, IGI

   Terms not yet verified

   Visit MOH London
7. 7Rare Carat8,743 in stock

   United States·Founded 2016·EGL, GIA, HRD, IGI·30-day returns·Ships to Australia

   Terms read on the retailer’s own site, October 19, 2026

   Visit Rare Carat
8. 877 Diamonds8,703 in stock

   United Kingdom·Founded 2005·GIA, HRD, IGI·Ships to Australia

   Terms not yet verified

   Visit 77 Diamonds
9. 9Allurez7,033 in stock

   United States·Founded 2010·EGL, GIA, HRD, IGI·Ships to Australia

   Terms not yet verified

   Visit Allurez
10. 10Calavera New York5,413 in stock

    United States·EGL, GIA, GSI, HRD·30-day returns·Ships to Australia

    Terms read on the retailer’s own site, September 2, 2026

    Visit Calavera New York

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.

49 of the 75 retailers with shipping details ship to Australia. 26 do not. 6 retailers have not published any shipping details.

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

Current examples carried by more than one retailer, so the comparison is real. Prices shown in USD.

• 1.2ct H VS2from $2,933 across 10 retailersAs of November 5, 2026
• 1.25ct H VS2from $3,541 across 17 retailersAs of November 2, 2026
• 1.29ct G VS1from $4,107 across 16 retailersAs of November 3, 2026
• 1.25ct G VS1from $4,186 across 19 retailersAs of November 6, 2026
• 1.26ct I VS2from $2,406 across 11 retailersAs of November 1, 2026
• 1.3ct I VS2from $3,302 across 16 retailersAs of November 6, 2026

• 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.