How much does a 0.20 to 0.49ct F I1 natural oval diamond cost?

As of October 2026, 0.20 to 0.49ct F I1 natural oval diamonds typically cost £208 GBP to £532 GBP, with a median price of £380 GBP. There are currently 20 diamonds matching this specification available across retailers.

Where can I find the best price on a F I1 oval diamond?

About 40% of these diamonds are available at multiple retailers, with an average price spread of 37%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct F I1 Natural Oval

Quick answer

As of October 2026, there are 20 natural oval diamonds with F colour and I1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run £208 GBP to £532 GBP, with a median of £380 GBP. At least 10 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 37%. Half of all listings fall between £745 GBP and £1,069 GBP per carat.

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

£117 GBP

Highest Price

£889 GBP

Average Price

£387 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

40.0%

Price Spread

36.8%

Price Range

Price per carat distribution across retailers

$1,175/ct

10th Percentile

$930

Median

$1,175

90th Percentile

$3,002

Score Distribution

97 diamonds scored across 4 quality tiers

Excellent

3 (3.1%)

Very Good

16 (16.5%)

Good

17 (17.5%)

Average

61 (62.9%)

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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