Where to buy a 1.5ct natural round diamond

Half of these diamonds are listed between $4,034 and $8,906 (as of November 6, 2026).

Certificated stones with a recently confirmed price only, 32,736 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 Jewellers30,339 in stock

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

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

   Visit NZ Jewellers
2. 2Carbon Sparkle28,932 in stock

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

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

   Visit Carbon Sparkle
3. 3Aurelinne20,141 in stock

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

   Terms not yet verified

   Visit Aurelinne
4. 4

   The Perfect Carat

   19,407 in stock

   US·EGL, GIA, GSI, HRD·Ships to United States

   Terms not yet verified
5. 5MOH London16,342 in stock

   United Kingdom·EGL, GIA, HRD, IGI

   Terms not yet verified

   Visit MOH London
6. 6Yorxs15,469 in stock

   Germany·Founded 2011·GIA, HRD, IGI

   Terms not yet verified

   Visit Yorxs
7. 777 Diamonds14,037 in stock

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

   Terms not yet verified

   Visit 77 Diamonds
8. 8Rare Carat13,705 in stock

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

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

   Visit Rare Carat
9. 9Allurez10,540 in stock

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

   Terms not yet verified

   Visit Allurez
10. 10Moon Ocean10,263 in stock

    United Kingdom·Founded 2022·EGL, GIA, HRD, IGI·Ships to United States

    Terms not yet verified

    Visit Moon Ocean

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.

62 of the 75 retailers with shipping details ship to United States. 13 do not. 3 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.

• 1.51ct H SI2from $3,284 across 7 retailersAs of October 31, 2026
• 1.51ct H SI2from $3,364 across 9 retailersAs of November 5, 2026
• 1.5ct G SI2from $4,406 across 6 retailersAs of November 5, 2026
• 1.51ct G SI2from $3,673 across 7 retailersAs of November 5, 2026
• 1.51ct I SI2from $2,490 across 7 retailersAs of October 31, 2026
• 1.51ct I SI2from $2,699 across 7 retailersAs of November 3, 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.