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Carat Hunter · Where to buy diamonds

Where to buy a 3ct lab-grown oval diamond

Every retailer in our index stocking this size and shape, 61 of them, across 198,091 live listings.

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

The market at this size and shape

Active listings

198,091

Retailers carrying

61

Median active price

£830

Grade combinations

31

Certificate mix:IGI 171,843 · GIA 17,302 · GCAL 4,184 · HRD 63

What it actually costs

Lower 10% £547Median £830Upper 10% £2,732

Middle half sell between £668 to £1,543

Certificated stones with a live price only, 56,250 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

206%

Typical difference

£1,554

Stones compared

27,947

Across 27,947 stones of this size and shape carried by more than one retailer, the dearest listing sits 206% above the cheapest for the identical certificated diamond, a typical gap of £1,554. 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

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.

E VVS225,152 · 49rE VS121,725 · 51rD VS121,357 · 48rD VVS218,228 · 54rF VVS217,858 · 47rD VVS114,079 · 47rF VS111,798 · 46rG VS19,822 · 38rE VS29,084 · 42rD IF8,673 · 41rD FL8,440 · 30rG VVS28,360 · 37rD VS25,320 · 38rE VVS14,359 · 45rF VS22,839 · 35rH VS12,481 · 29rG VS22,210 · 32rH VVS21,736 · 22rF VVS11,661 · 40rE IF945 · 34rH VS2562 · 25rG VVS1542 · 32rE FL283 · 25rF IF219 · 28rH VVS1104 · 17rG IF96 · 21rI VS186 · 24rI VS226 · 13rI VVS219 · 10rH IF14 · 14rI VVS111 · 11r

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

  • Oval: an elongated brilliant cut that looks larger face-up than its carat weight.
  • 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 27,947 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 206%, about £1,554.

Can I see retailers for one exact grade?

Yes. Each of the 31 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.