How much does a 1.00 to 1.49ct F I1 natural oval diamond cost?

As of October 2026, 1.00 to 1.49ct F I1 natural oval diamonds typically cost £1,008 GBP to £3,642 GBP, with a median price of £1,927 GBP. There are currently 155 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 53%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct F I1 Natural Oval

Quick answer

As of October 2026, there are 155 natural oval diamonds with F colour and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £1,008 GBP to £3,642 GBP, with a median of £1,927 GBP. At least 26 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 53%. Half of all listings fall between £1,158 GBP and £1,992 GBP per carat. The same specification in lab grown form lists at a median of about £1,102 GBP per carat. Over the last 30 days the median price moved -7.5% and the number of listings moved +21.4%.

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

155

Lowest Price

£563 GBP

Highest Price

£6,197 GBP

Average Price

£2,120 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

30.6%

Price Spread

53.3%

30-Day Price Trend

-7.5%

30-Day Supply Change

+21.4%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$2,085/ct

10th Percentile

$1,250

Median

$2,085

90th Percentile

$3,605

Score Distribution

479 diamonds scored across 4 quality tiers

Excellent

47 (9.8%)

Very Good

94 (19.6%)

Good

91 (19.0%)

Average

247 (51.6%)

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Consider Instead

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

Lab-Grown F I1Same 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