Where to buy a 1.25ct natural radiant diamond

Half of these diamonds are listed between £2,078 and £3,887 (as of November 7, 2026).

Certificated stones with a recently confirmed price only, 2,147 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 Jewellers1,404 in stock

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

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

   Visit NZ Jewellers
2. 2Carbon Sparkle1,182 in stock

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

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

   Visit Carbon Sparkle
3. 3

   The Perfect Carat

   980 in stock

   US·EGL, GIA, HRD, IGI

   Terms not yet verified
4. 4Diamond Wish944 in stock

   United States·Founded 2012·GIA·Ships to United Kingdom

   Terms not yet verified

   Visit Diamond Wish
5. 5Aurelinne917 in stock

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

   Terms not yet verified

   Visit Aurelinne
6. 6MOH London854 in stock

   United Kingdom·EGL, GIA, HRD, IGI·Ships to United Kingdom

   Terms not yet verified

   Visit MOH London
7. 777 Diamonds831 in stock

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

   Terms not yet verified

   Visit 77 Diamonds
8. 8Rare Carat771 in stock

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

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

   Visit Rare Carat
9. 9Allurez752 in stock

   United States·Founded 2010·GIA·Ships to United Kingdom

   Terms not yet verified

   Visit Allurez
10. 10Yorxs710 in stock

    Germany·Founded 2011·GIA, HRD, IGI

    Terms not yet verified

    Visit Yorxs

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.

42 of the 67 retailers with shipping details ship to United Kingdom. 25 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 $2,789 across 3 retailersAs of November 6, 2026
• 1.2ct H VS2from $3,032 across 15 retailersAs of November 6, 2026
• 1.21ct J VS2from $2,074 across 10 retailersAs of November 6, 2026
• 1.21ct J VS2from $2,227 across 20 retailersAs of November 6, 2026
• 1.26ct G VS2from $3,200 across 9 retailersAs of November 6, 2026
• 1.2ct G VS2from $3,742 across 21 retailersAs of November 6, 2026

• Radiant: a rectangular brilliant cut that combines the emerald outline with round-style faceting.
• Natural: mined diamonds with the certification, provenance and resale profile traditional buyers expect.