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Carat Hunter · Where to buy diamonds

Where to buy a 0.75ct lab-grown marquise diamond

Every retailer in our index stocking this size and shape, 48 of them, across 36,080 live listings.

Updated September 14, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

36,080

Retailers carrying

48

Median active price

£260

Grade combinations

27

Certificate mix:IGI 35,123 · GCAL 136 · GIA 96 · HRD 2

What it actually costs

Lower 10% £93Median £260Upper 10% £559

Middle half sell between £174 to £400

Certificated stones with a live price only, 6,490 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

218%

Typical difference

£412

Stones compared

3,599

Across 3,599 stones of this size and shape carried by more than one retailer, the dearest listing sits 218% above the cheapest for the identical certificated diamond, a typical gap of £412. 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
  14. 24

    GemTrove

    455 in stock
    AU

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

5 of the 25 retailers ship to United Kingdom. 20 do not.

Narrow it down by grade

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

D VVS211,344 · 44rD VS18,361 · 41rD VVS14,571 · 37rE VVS23,180 · 39rE VS12,012 · 41rD VS21,183 · 34rE VVS11,115 · 36rF VVS2721 · 35rD IF708 · 36rE VS2638 · 36rF VS1501 · 34rD FL254 · 23rG VVS2207 · 22rG VS1203 · 28rF VS2203 · 24rE IF176 · 31rF VVS1148 · 32rH VS1113 · 21rG VS2110 · 18rH VVS291 · 17rH VS259 · 13rI VS145 · 14rE FL39 · 20rI VS230 · 16rF IF23 · 20rG VVS116 · 12rI VVS215 · 10r

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.
  • Lab-grown: chemically identical to natural diamonds, typically 60% to 80% less than a comparable natural cohort.

Frequently asked

How much do retailers differ on the same diamond?

Across 3,599 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 218%, about £412.

Can I see retailers for one exact grade?

Yes. Each of the 27 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.