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Carat Hunter · Where to buy diamonds

Where to buy a 0.5ct natural marquise diamond

Every retailer in our index stocking this size and shape, 66 of them, across 74,310 current listings.

Updated November 5, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

74,310

Retailers carrying

66

Median confirmed price

£598

Grade combinations

32

Certificate mix:GIA 66,937 · IGI 4,169 · HRD 14 · AGS 3

What it actually costs

Half of these diamonds are listed between £477 and £756 (as of November 5, 2026).

Lower 10% £399Median £598Upper 10% £954

Middle half listed between £477 to £756

Certificated stones with a recently confirmed price only, 12,751 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Cheapest to dearest, median

67%

Cheapest to dearest, median in price

£351

Stones compared

8,391

Across 8,391 stones of this size and shape carried by more than one retailer, the dearest listing sits 67% above the cheapest for the identical certificated diamond, a typical gap of £351. That gap is what comparing before you buy avoids.

Every retailer that stocks this spec

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

  1. 1Rare Carat5,992 in stock
    United States·Founded 2016·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  4. 4NZ Jewellers3,505 in stock
    New Zealand·Founded 2006·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  5. 5Brilliance3,199 in stock
    United States·Founded 2002·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Brilliance
Show 15 more retailers
  1. 11Aurelinne2,407 in stock
    United States·Founded 2021·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Aurelinne
  2. 12Yorxs2,363 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs
  3. 13

    The Perfect Carat

    2,275 in stock
    US
    Terms not yet verified
  5. 15Moon Ocean1,698 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Moon Ocean
  7. 17

    GemTrove

    1,529 in stock
    AU
    Terms not yet verified
  9. 19RockHer1,432 in stock
    United States·Founded 2016·40-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit RockHer
  11. 21B2C Jewels1,399 in stock
    United States·Founded 2004·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  13. 23Cape Diamonds1,370 in stock
    South Africa·Founded 2005·7-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  14. 24Ritani1,368 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Ritani

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.

17 of the 25 retailers ship to United Kingdom. 8 do not.

Narrow it down by grade

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

D VS25,442 · 60rD VS15,270 · 60rD VVS15,100 · 58rD VVS24,290 · 58rE VS24,159 · 59rE VS14,051 · 58rF VS13,678 · 61rF VS23,320 · 60rG VS23,048 · 60rG VS12,821 · 58rH VS12,801 · 59rF VVS22,521 · 58rF VVS12,482 · 57rE VVS12,412 · 56rE VVS22,311 · 57rD IF2,032 · 58rH VS21,971 · 57rH VVS21,946 · 55rH VVS11,842 · 56rG VVS21,762 · 58rI VS11,721 · 53rG VVS11,658 · 55rI VS21,418 · 48rE IF1,140 · 50rI VVS21,084 · 49rI VVS11,067 · 51rH IF812 · 51rF IF784 · 47rG IF582 · 45rI IF506 · 49rD FL208 · 36rE FL39 · 22r

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?

Across 8,391 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 67%, about £351.

Can I see retailers for one exact grade?

Yes. Each of the 32 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.