How much does a 2.00 to 2.99ct E SI1 natural round diamond cost?

As of October 2026, 2.00 to 2.99ct E SI1 natural round diamonds typically cost £11,538 GBP to £31,984 GBP, with a median price of £18,789 GBP. There are currently 462 diamonds matching this specification available across retailers.

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

About 33% of these diamonds are available at multiple retailers, with an average price spread of 33%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct E SI1 Natural Round

Quick answer

As of October 2026, there are 462 natural round diamonds with E colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £11,538 GBP to £31,984 GBP, with a median of £18,789 GBP. At least 61 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 33%. Half of all listings fall between £6,612 GBP and £9,199 GBP per carat. The same specification in lab grown form lists at a median of about £297 GBP per carat. Over the last 30 days the median price moved -0.4% and the number of listings moved +9.3%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

462

Lowest Price

£5,854 GBP

Highest Price

£56,003 GBP

Average Price

£20,291 GBP