How much does a 5.00ct+ E SI1 natural heart diamond cost?

As of September 2026, 5.00ct+ E SI1 natural heart diamonds typically cost £62,443 GBP to £153,157 GBP, with a median price of £87,338 GBP. There are currently 23 diamonds matching this specification available across retailers.

Where can I find the best price on a E SI1 heart diamond?

Compare prices across retailers on Carat Hunter to see all your options.

5.00ct+ E SI1 Natural Heart

Quick answer

As of September 2026, there are 23 natural heart diamonds with E colour and SI1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £62,443 GBP to £153,157 GBP, with a median of £87,338 GBP. At least 6 retailers stock this exact specification. Half of all listings fall between £16,749 GBP and £18,626 GBP per carat. The same specification in lab grown form lists at a median of about £367 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. Heart natural stones in the index: 2,261 USD per carat, +1.7% 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

£55,935 GBP

Highest Price

£226,442 GBP

Average Price

£96,010 GBP