Where to buy a 1.25ct natural marquise diamond

Half of these diamonds are listed between $3,187 and $6,349 (as of November 6, 2026).

Certificated stones with a recently confirmed price only, 2,245 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 Jewellers1,454 in stock

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

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

   Visit NZ Jewellers
2. 2Carbon Sparkle1,349 in stock

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

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

   Visit Carbon Sparkle
3. 3Rare Carat1,258 in stock

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

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

   Visit Rare Carat
4. 477 Diamonds1,099 in stock

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

   Terms not yet verified

   Visit 77 Diamonds
5. 5Aurelinne1,081 in stock

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

   Terms not yet verified

   Visit Aurelinne
6. 6

   The Perfect Carat

   1,000 in stock

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

   Terms not yet verified
7. 7Yorxs967 in stock

   Germany·Founded 2011·AGS, GIA, HRD, IGI

   Terms not yet verified

   Visit Yorxs
8. 8MOH London873 in stock

   United Kingdom·EGL, GIA, HRD, IGI

   Terms not yet verified

   Visit MOH London
9. 9Brilliance814 in stock

   United States·Founded 2002·EGL, GIA, HRD, IGI·Ships to United States

   Terms not yet verified

   Visit Brilliance
10. 10Blue Nile777 in stock

    United States·Founded 1999·GIA, IGI·Ships to United States

    Terms not yet verified

    Visit Blue Nile

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.

59 of the 67 retailers with shipping details ship to United States. 8 do not. 2 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 SI2from $2,496 across 13 retailersAs of November 6, 2026
• 1.21ct H SI2from $2,723 across 12 retailersAs of November 4, 2026
• 1.2ct G SI2from $1,624 across 13 retailersAs of November 6, 2026
• 1.22ct G SI2from $1,155 across 6 retailersAs of November 5, 2026
• 1.21ct F SI2from $1,749 across 7 retailersAs of November 5, 2026
• 1.29ct F SI2from $1,726 across 6 retailersAs of November 5, 2026

• Marquise: a pointed-end ellipse that faces up large for its carat.
• Natural: mined diamonds with the certification, provenance and resale profile traditional buyers expect.