How much does a 3.00 to 4.99ct F SI1 natural heart diamond cost?

As of September 2026, 3.00 to 4.99ct F SI1 natural heart diamonds typically cost £20,786 GBP to £63,029 GBP, with a median price of £30,811 GBP. There are currently 73 diamonds matching this specification available across retailers.

Where can I find the best price on a F SI1 heart diamond?

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3.00 to 4.99ct F SI1 Natural Heart

Quick answer

As of September 2026, there are 73 natural heart diamonds with F colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £20,786 GBP to £63,029 GBP, with a median of £30,811 GBP. At least 32 retailers stock this exact specification. Half of all listings fall between £6,165 GBP and £8,143 GBP per carat. The same specification in lab grown form lists at a median of about £283 GBP per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Heart natural stones in the index: 2,261 USD per carat, +1.7% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

£12,146 GBP

Highest Price

£127,580 GBP

Average Price

£37,292 GBP

Market Intelligence

Retailers Selling

Price Spread

27.3%

Price Range

Price per carat distribution across retailers

$9,777/ct

10th Percentile

$6,488

Median

$9,777

90th Percentile

$12,096

Score Distribution

73 diamonds scored across 4 quality tiers

Excellent

2 (2.7%)

Very Good

14 (19.2%)

Good

22 (30.1%)

Average

35 (47.9%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

F SI2SI2 inclusions are not visible without magnification

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Lab-Grown F SI1Same specifications, lab-grown origin

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1