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Carat Hunter · Where to buy diamonds

Where to buy a 3ct natural marquise diamond

Every retailer in our index stocking this size and shape, 67 of them, across 6,840 current listings.

Updated November 7, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

6,840

Retailers carrying

67

Median confirmed price

£27,430

Grade combinations

52

Certificate mix:GIA 5,124 · IGI 892 · HRD 434

What it actually costs

Half of these diamonds are listed between £18,051 and £35,276 (as of November 7, 2026).

Lower 10% £12,743Median £27,430Upper 10% £44,777

Middle half listed between £18,051 to £35,276

Certificated stones with a recently confirmed price only, 540 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

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.

Every retailer that stocks this spec

Ranked by active inventory count. Selection is mechanical, not editorial.

  1. 1NZ Jewellers399 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 Sparkle359 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. 3Aurelinne336 in stock
    United States·Founded 2021·EGL, GIA, HRD, IGI·Ships to United Kingdom
    Terms not yet verified
    Visit Aurelinne
  6. 6Yorxs286 in stock
    Germany·Founded 2011·GIA, HRD, IGI
    Terms not yet verified
    Visit Yorxs
  7. 7Rare Carat282 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
  8. 8

    The Perfect Carat

    280 in stock
    US·EGL, GIA, HRD, IGI
    Terms not yet verified
  9. 9B2C Jewels223 in stock
    United States·Founded 2004·GIA, HRD, IGI·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
Show 57 more retailers
  1. 11Brilliance206 in stock
    United States·Founded 2002·EGL, GIA, HRD, IGI·Ships to United Kingdom
    Terms not yet verified
    Visit Brilliance
  14. 24Cape Diamonds94 in stock
    South Africa·Founded 2005·GIA, IGI·7-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  16. 26Allurez89 in stock
    United States·Founded 2010·GIA·Ships to United Kingdom
    Terms not yet verified
    Visit Allurez
  17. 27RockHer89 in stock
    United States·Founded 2016·GIA, IGI·Ships to United Kingdom
    Terms not yet verified
    Visit RockHer
  20. 30Zales83 in stock
    United States·Founded 1924·GIA
    Terms not yet verified
    Visit Zales
  22. 32Jared81 in stock
    United States·Founded 1993·GIA
    Terms not yet verified
    Visit Jared
  30. 40

    Washington Diamond

    54 in stock
    US·GIA
    Terms not yet verified
  43. 53GemsNY13 in stock
    United States·Founded 1988·GIA, IGI·Ships to United Kingdom
    Terms not yet verified
    Visit GemsNY
  45. 55

    GemTrove

    11 in stock
    AU·GIA, HRD, IGI
    Terms not yet verified
  50. 60

    Lauren B

    3 in stock
    US
    Terms not yet verified
  51. 61

    Distinctive Gem

    2 in stock
    US
    Terms not yet verified

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 62 retailers with shipping details ship to United Kingdom. 23 do not. 5 retailers have not published any shipping details.

Narrow it down by grade

Each combination below has its own page with the retailers that stock exactly that grade.

G SI2503 · 50rD SI1499 · 57rD SI2453 · 49rJ SI2374 · 47rI SI2367 · 44rH SI2319 · 49rF SI2266 · 45rI SI1253 · 44rE SI2205 · 46rF SI1192 · 53rD VS2172 · 47rG SI1167 · 50rE SI1164 · 49rD VS1159 · 52rH SI1157 · 42rK SI2148 · 33rF VS2146 · 48rJ SI1146 · 45rG VS2119 · 44rI VVS2119 · 43rH VS2115 · 39rF VS1114 · 42rI VS2114 · 31rI VVS1112 · 38rE VS1106 · 48rI VS1102 · 27rK SI197 · 33rD FL86 · 26rE VS279 · 40rH VVS179 · 41rG VVS177 · 41rD IF72 · 27rG VS167 · 44rH VS163 · 30rF IF62 · 38rD VVS150 · 33rJ IF44 · 26rF VVS141 · 26rJ VS241 · 23rJ VS138 · 21rF VVS237 · 27rH VVS233 · 26rJ VVS232 · 24rI IF31 · 23rK IF31 · 23rG IF29 · 25rK VS227 · 16rD VVS226 · 22rH IF26 · 17rJ VVS123 · 22rE IF15 · 11rK VS111 · 11r

Stones at this spec now

Current examples carried by more than one retailer, so the comparison is real. Prices shown in USD.

What this spec means

  • 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.

Frequently asked

How much do retailers differ on the same diamond?

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.

Can I see retailers for one exact grade?

Yes. Each of the 52 colour and clarity combinations above has its own page listing the retailers that stock exactly that grade.

Does Carat Hunter earn commission from these retailers?

No. We earn zero affiliate revenue from any retailer in our index.

How fresh is this data?

Listings refresh as we re-read each retailer, most of them every day. Static facts about each retailer refresh weekly.

How is the retailer ranking calculated?

Strictly by active inventory count for this exact spec. The retailer carrying the most stones at the spec ranks first. There is no editorial input, weighting or affiliate consideration.

Why do you not show per-retailer prices on this page?

Prices vary per stone, not per store. Click through to any matched diamond and you will see every retailer's price on the exact same physical stone, which is the meaningful comparison.