Where to buy a 1.25ct lab-grown princess diamond

Half of these diamonds are listed between A$333 and A$1,175 (as of November 7, 2026).

Certificated stones with a recently confirmed price only, 2,094 of them. Each contributes its cheapest confirmed price.

As of November 7, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 21% 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. 1Rare Carat1,524 in stock

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

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

   Visit Rare Carat
2. 2Diamond Quarter1,503 in stock

   United Kingdom·GCAL, GIA, HRD, IGI

   Terms not yet verified

   Visit Diamond Quarter
3. 3Aurelinne1,500 in stock

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

   Terms not yet verified

   Visit Aurelinne
4. 4Carbon Sparkle1,464 in stock

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

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

   Visit Carbon Sparkle
5. 5

   The Perfect Carat

   1,374 in stock

   US·GCAL, GIA, GSI, HRD

   Terms not yet verified
6. 6NZ Jewellers1,326 in stock

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

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

   Visit NZ Jewellers
7. 7Loose Grown Diamond1,249 in stock

   United States·Founded 2018·GCAL, GIA, IGI

   Terms not yet verified

   Visit Loose Grown Diamond
8. 8MOH London1,136 in stock

   United Kingdom·GCAL, GIA, GSI, HRD

   Terms not yet verified

   Visit MOH London
9. 9Brilliant Earth1,028 in stock

   United States·Founded 2005·GCAL, GIA, IGI·Ships to Australia

   Terms not yet verified

   Visit Brilliant Earth
10. 1077 Diamonds1,023 in stock

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

    Terms not yet verified

    Visit 77 Diamonds

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.

39 of the 58 retailers with shipping details ship to Australia. 19 do not. 15 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.

• 1.27ct D VVS2from $378 across 9 retailersAs of November 6, 2026
• 1.28ct D VVS2from $214 across 20 retailersAs of November 6, 2026
• 1.27ct E VVS2from $182 across 16 retailersAs of November 6, 2026
• 1.27ct E VVS2from $205 across 21 retailersAs of November 6, 2026
• 1.28ct D VS1from $192 across 12 retailersAs of November 6, 2026
• 1.28ct D VS1from $208 across 20 retailersAs of November 6, 2026

• Princess: a square brilliant cut, second only to round in popularity.
• Lab-grown: chemically identical to natural diamonds, typically at least 90% less than a comparable natural cohort from 1 carat up.