How much does a 3.00 to 4.99ct E SI1 natural heart diamond cost?

As of October 2026, 3.00 to 4.99ct E SI1 natural heart diamonds typically cost £21,237 GBP to £61,692 GBP, with a median price of £33,640 GBP. There are currently 34 diamonds matching this specification available across retailers.

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

About 32% of these diamonds are available at multiple retailers, with an average price spread of 22%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct E SI1 Natural Heart

Quick answer

As of October 2026, there are 34 natural heart diamonds with E colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £21,237 GBP to £61,692 GBP, with a median of £33,640 GBP. At least 43 retailers stock this exact specification, and 32% of the stones appear at more than one of them, with an average price spread of 22%. Half of all listings fall between £7,546 GBP and £9,367 GBP per carat. The same specification in lab grown form lists at a median of about £241 GBP per carat. Over the last 30 days the median price moved -1.5% and the number of listings moved +23.0%.

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. Heart natural stones in the index: 2,374 USD per carat, +9.8% 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

£16,716 GBP

Highest Price

£107,937 GBP

Average Price

£39,530 GBP