Where to buy a 1.5ct lab-grown round diamond

Half of these diamonds are listed between A$346 and A$769 (as of November 6, 2026).

Certificated stones with a recently confirmed price only, 67,693 of them. Each contributes its cheapest confirmed price.

As of November 5, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 19% 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. 1Carbon Sparkle44,970 in stock

   United States·GCAL, GIA, IGI, SGL·21-day returns·Ships to Australia

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

   Visit Carbon Sparkle
2. 2Loose Grown Diamond43,082 in stock

   United States·Founded 2018·GCAL, GIA, IGI

   Terms not yet verified

   Visit Loose Grown Diamond
3. 3NZ Jewellers41,698 in stock

   New Zealand·Founded 2006·GCAL, GIA, IGI, SGL·30-day returns·Ships to Australia

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

   Visit NZ Jewellers
4. 4Aurelinne40,200 in stock

   United States·Founded 2021·GCAL, GIA, IGI, SGL·Ships to Australia

   Terms not yet verified

   Visit Aurelinne
5. 577 Diamonds39,823 in stock

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

   Terms not yet verified

   Visit 77 Diamonds
6. 6MOH London38,606 in stock

   United Kingdom·GCAL, GIA, HRD, IGI

   Terms not yet verified

   Visit MOH London
7. 7

   The Perfect Carat

   35,489 in stock

   US·GCAL, GIA, HRD, IGI

   Terms not yet verified
8. 8Brilliance30,133 in stock

   United States·Founded 2002·GCAL, GIA, IGI·Ships to Australia

   Terms not yet verified

   Visit Brilliance
9. 9B2C Jewels29,443 in stock

   United States·Founded 2004·GCAL, GIA, IGI·30-day returns·Ships to Australia

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

   Visit B2C Jewels
10. 10Taylor and Hart28,534 in stock

    United Kingdom·Founded 2013·GCAL, GIA, IGI·Ships to Australia

    Terms not yet verified

    Visit Taylor and Hart

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 65 retailers with shipping details ship to Australia. 20 do not. 7 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.

• 1.48ct D VVS2from $364 across 19 retailersAs of November 4, 2026
• 1.53ct D VVS2from $217 across 19 retailersAs of November 5, 2026
• 1.55ct E VVS2from $229 across 10 retailersAs of November 1, 2026
• 1.51ct E VVS2from $207 across 4 retailersAs of November 5, 2026
• 1.49ct D VS1from $188 across 23 retailersAs of November 5, 2026
• 1.48ct D VS1from $191 across 21 retailersAs of November 5, 2026

• Round: the most common cut, with the highest light return per carat.
• Lab-grown: chemically identical to natural diamonds, typically at least 90% less than a comparable natural cohort from 1 carat up.