How much does a 5.00ct+ E I1 natural round diamond cost?

As of September 2026, 5.00ct+ E I1 natural round diamonds typically cost £29,496 GBP to £83,619 GBP, with a median price of £58,846 GBP. There are currently 11 diamonds matching this specification available across retailers.

Where can I find the best price on a E I1 round diamond?

About 41% of these diamonds are available at multiple retailers, with an average price spread of 17%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ E I1 Natural Round

Quick answer

As of September 2026, there are 11 natural round diamonds with E colour and I1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £29,496 GBP to £83,619 GBP, with a median of £58,846 GBP. At least 9 retailers stock this exact specification, and 41% of the stones appear at more than one of them, with an average price spread of 17%. Half of all listings fall between £5,859 GBP and £6,982 GBP per carat. Over the last 30 days the median price moved -44.8% and the number of listings moved -81.2%.

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. Round natural stones in the index: 2,094 USD per carat, -3.8% 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

£11,793 GBP

Highest Price

£106,796 GBP

Average Price

£54,895 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

40.7%

Price Spread

16.9%

30-Day Price Trend

-44.8%

30-Day Supply Change

-81.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$8,955/ct

10th Percentile

$6,511

Median

$8,955

90th Percentile

$14,724

Score Distribution

11 diamonds scored across 3 quality tiers

Very Good

3 (27.3%)

Good

7 (63.6%)

Average

1 (9.1%)

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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