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Carat Hunter · Where to buy diamonds

Where to buy a 3ct natural heart diamond

Every retailer in our index stocking this size and shape, 56 of them, across 2,755 live listings.

Updated September 18, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

2,755

Retailers carrying

56

Median active price

£18,579

Grade combinations

27

Certificate mix:GIA 2,166 · IGI 246 · HRD 76

What it actually costs

Lower 10% £7,629Median £18,579Upper 10% £42,101

Middle half sell between £11,249 to £29,087

Certificated stones with a live price only, 1,163 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

31%

Typical difference

£5,041

Stones compared

712

Across 712 stones of this size and shape carried by more than one retailer, the dearest listing sits 31% above the cheapest for the identical certificated diamond, a typical gap of £5,041. 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.

6 of the 25 retailers ship to United Kingdom. 19 do not.

Narrow it down by grade

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

D VS2326 · 39rH VS2250 · 43rE VS2227 · 39rI VS2207 · 40rH VS1155 · 41rG VS2153 · 36rD VVS1139 · 38rI VS1118 · 31rI VVS1110 · 32rD VS1109 · 36rD IF92 · 35rE VS191 · 34rD FL91 · 29rG VS185 · 26rG VVS263 · 27rI VVS261 · 23rF VS258 · 29rH VVS157 · 31rD VVS256 · 30rF VS152 · 35rH VVS251 · 28rE VVS239 · 27rG VVS131 · 19rE IF31 · 25rF VVS131 · 16rI IF29 · 22rE VVS113 · 9r

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.
  • Natural: mined diamonds with the certification, provenance and resale profile traditional buyers expect.

Frequently asked

How much do retailers differ on the same diamond?

Across 712 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 31%, about £5,041.

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 3ct Natural Heart Diamonds | Carat Hunter