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

As of September 2026, 2.00 to 2.99ct E SI1 natural cushion diamonds typically cost £8,219 GBP to £20,951 GBP, with a median price of £13,782 GBP. There are currently 532 diamonds matching this specification available across retailers.

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

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

2.00 to 2.99ct E SI1 Natural Cushion

Quick answer

As of September 2026, there are 532 natural cushion diamonds with E colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £8,219 GBP to £20,951 GBP, with a median of £13,782 GBP. At least 48 retailers stock this exact specification. Half of all listings fall between £5,273 GBP and £8,014 GBP per carat. The same specification in lab grown form lists at a median of about £283 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. Cushion natural stones in the index: 2,792 USD per carat, +1.1% 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

532

Lowest Price

£5,091 GBP

Highest Price

£57,024 GBP

Average Price

£14,742 GBP