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

As of September 2026, 3.00 to 4.99ct F SI1 natural oval diamonds typically cost £21,072 GBP to £59,223 GBP, with a median price of £36,435 GBP. There are currently 302 diamonds matching this specification available across retailers.

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

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3.00 to 4.99ct F SI1 Natural Oval

Quick answer

As of September 2026, there are 302 natural oval diamonds with F colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £21,072 GBP to £59,223 GBP, with a median of £36,435 GBP. At least 50 retailers stock this exact specification. Half of all listings fall between £10,299 GBP and £13,539 GBP per carat. The same specification in lab grown form lists at a median of about £272 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. Oval natural stones in the index: 2,380 USD per carat, -9.6% 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

302

Lowest Price

£13,191 GBP

Highest Price

£137,061 GBP

Average Price

£39,542 GBP

Market Intelligence

Retailers Selling

Price Spread

26.9%

Price Range

Price per carat distribution across retailers

$15,327/ct

10th Percentile

$10,110

Median

$15,327

90th Percentile

$19,340

Score Distribution

302 diamonds scored across 4 quality tiers

Excellent

42 (13.9%)

Very Good

70 (23.2%)

Good

109 (36.1%)

Average

81 (26.8%)

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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

Save 97%

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