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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, 50 of them, across 36,083 live listings.

Updated September 19, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

36,083

Retailers carrying

50

Median active price

£270

Grade combinations

27

Certificate mix:IGI 35,000 · GCAL 148 · GIA 99 · HRD 2

What it actually costs

Lower 10% £153Median £270Upper 10% £567

Middle half sell between £185 to £400

Certificated stones with a live price only, 6,520 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

203%

Typical difference

£400

Stones compared

3,579

Across 3,579 stones of this size and shape carried by more than one retailer, the dearest listing sits 203% above the cheapest for the identical certificated diamond, a typical gap of £400. 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
  12. 22

    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.

Narrow it down by grade

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

D VVS211,284 · 45rD VS18,345 · 40rD VVS14,653 · 37rE VVS23,138 · 40rE VS12,036 · 41rD VS21,187 · 34rE VVS11,147 · 36rD IF722 · 37rF VVS2677 · 35rE VS2634 · 36rF VS1493 · 34rD FL259 · 23rG VVS2208 · 21rF VS2201 · 24rG VS1199 · 28rE IF179 · 31rF VVS1152 · 32rG VS2116 · 18rH VS1111 · 21rH VVS293 · 17rH VS259 · 13rI VS146 · 14rE FL40 · 20rI VS230 · 16rF IF25 · 21rI VVS217 · 11rG VVS117 · 12r

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 3,579 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 203%, about £400.

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.

Where to Buy 0.75ct Lab Grown Marquise Diamonds | Carat Hunter