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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, 63 of them, across 61,891 live listings.

Updated September 21, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

61,891

Retailers carrying

63

Median active price

£632

Grade combinations

32

Certificate mix:GIA 56,939 · IGI 2,626 · HRD 11 · AGS 2

What it actually costs

Lower 10% £409Median £632Upper 10% £974

Middle half sell between £501 to £794

Certificated stones with a live price only, 16,552 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

67%

Typical difference

£367

Stones compared

9,546

Across 9,546 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 £367. 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.

Show 15 more retailers
  4. 14

    GemTrove

    1,529 in stock
    AU
  8. 18

    MOH London

    1,368 in stock
    United Kingdom

Stock counts are updated daily. Founded, return window and shipping details are retailer-provided and were last verified September 2, 2026.

7 of the 25 retailers ship to United Kingdom. 18 do not.

Narrow it down by grade

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

D VVS14,545 · 56rD VS24,345 · 57rD VS14,276 · 59rD VVS24,110 · 56rE VS23,231 · 56rE VS13,189 · 54rF VS12,960 · 58rF VS22,618 · 55rG VS22,442 · 58rG VS12,257 · 55rE VVS12,208 · 54rF VVS12,096 · 54rF VVS22,046 · 54rH VS12,040 · 57rE VVS21,988 · 55rD IF1,985 · 52rH VS21,636 · 56rH VVS11,618 · 53rH VVS21,608 · 54rG VVS11,607 · 53rG VVS21,470 · 55rI VS11,090 · 50rI VS21,084 · 46rE IF1,023 · 47rI VVS1964 · 48rI VVS2790 · 46rH IF720 · 47rF IF712 · 43rG IF477 · 41rI IF403 · 45rD FL265 · 31rE FL39 · 18r

Stones at this spec now

Live 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 9,546 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 67%, about £367.

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?

Live listings refresh daily. 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.