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

As of October 2026, 3.00 to 4.99ct F SI1 natural oval diamonds typically cost £29,290 GBP to £72,622 GBP, with a median price of £41,925 GBP. There are currently 92 diamonds matching this specification available across retailers.

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

About 30% of these diamonds are available at multiple retailers, with an average price spread of 23%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct F SI1 Natural Oval

Quick answer

As of October 2026, there are 92 natural oval diamonds with F colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £29,290 GBP to £72,622 GBP, with a median of £41,925 GBP. At least 56 retailers stock this exact specification, and 30% of the stones appear at more than one of them, with an average price spread of 23%. Half of all listings fall between £10,262 GBP and £12,887 GBP per carat. The same specification in lab grown form lists at a median of about £303 GBP per carat. Over the last 30 days the median price moved +1.3% and the number of listings moved +10.6%.

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

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Oval natural stones in the index: 2,655 USD per carat, +10.2% month on month. See the full index release

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

Last updated: October 2026

Available

Lowest Price

£16,761 GBP

Highest Price

£129,912 GBP

Average Price

£48,173 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

30.1%

Price Spread

22.9%

30-Day Price Trend

+1.3%

30-Day Supply Change

+10.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$15,361/ct

10th Percentile

$11,894

Median

$15,361

90th Percentile

$19,812

Score Distribution

358 diamonds scored across 4 quality tiers

Excellent

23 (6.4%)

Very Good

62 (17.3%)

Good

56 (15.6%)

Average

217 (60.6%)

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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

Save 24%

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