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Carat Hunter · Where to buy diamonds

Where to buy a 0.5ct lab-grown heart diamond

Every retailer in our index stocking this size and shape, 39 of them, across 9,675 live listings.

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

The market at this size and shape

Active listings

9,675

Retailers carrying

39

Median active price

£196

Grade combinations

21

Certificate mix:IGI 8,797 · GIA 34

What it actually costs

Lower 10% £120Median £196Upper 10% £387

Middle half sell between £151 to £280

Certificated stones with a live price only, 2,030 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

168%

Typical difference

£275

Stones compared

1,322

Across 1,322 stones of this size and shape carried by more than one retailer, the dearest listing sits 168% above the cheapest for the identical certificated diamond, a typical gap of £275. 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 June 15, 2026.

Narrow it down by grade

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

D VVS22,473 · 33rD VS12,098 · 27rE VVS21,198 · 29rD VVS1892 · 27rE VS1802 · 23rD VS2337 · 23rE VS2286 · 22rE VVS1281 · 25rF VVS2280 · 24rD IF246 · 22rF VS1178 · 23rD FL143 · 11rF VS278 · 15rG VVS276 · 18rG VS151 · 18rG VS245 · 8rF VVS145 · 15rE IF30 · 14rH VS127 · 5rH VVS220 · 13rF IF14 · 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

  • Heart: a brilliant cut with a cleft and a pointed tip, classic and recognizable.
  • 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 1,322 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 168%, about £275.

Can I see retailers for one exact grade?

Yes. Each of the 21 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 0.5ct Lab Grown Heart Diamonds | Carat Hunter