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Carat Hunter · Where to buy diamonds

Where to buy a 1.5ct lab-grown round diamond

Every retailer in our index stocking this size and shape, 72 of them, across 737,654 live listings.

Updated September 15, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

737,654

Retailers carrying

72

Median active price

£329

Grade combinations

33

Certificate mix:IGI 712,885 · GIA 5,022 · GCAL 2,322 · HRD 46

What it actually costs

Lower 10% £153Median £329Upper 10% £906

Middle half sell between £248 to £530

Certificated stones with a live price only, 138,564 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

194%

Typical difference

£572

Stones compared

90,085

Across 90,085 stones of this size and shape carried by more than one retailer, the dearest listing sits 194% above the cheapest for the identical certificated diamond, a typical gap of £572. 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.

Narrow it down by grade

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

D VVS2142,025 · 63rE VVS2112,439 · 56rD VS185,190 · 54rE VS180,775 · 53rD VVS161,177 · 57rF VVS248,119 · 56rE VVS131,615 · 51rF VS131,274 · 55rE VS226,144 · 49rD VS223,469 · 48rF VVS114,393 · 52rG VVS213,321 · 50rG VS112,907 · 49rD IF11,964 · 50rF VS29,289 · 46rD FL8,515 · 34rG VVS14,808 · 41rG VS23,689 · 42rE IF2,872 · 43rI VS12,779 · 28rH VVS22,270 · 36rH VS12,077 · 33rI VS21,709 · 26rH VS21,053 · 33rI VVS2932 · 25rE FL802 · 27rF IF745 · 34rH VVS1656 · 36rG IF345 · 27rF FL160 · 21rI VVS164 · 18rH IF38 · 11rI IF35 · 8r

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

  • Round: the most common cut, with the highest light return per 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 90,085 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 194%, about £572.

Can I see retailers for one exact grade?

Yes. Each of the 33 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.