How much does a 2.00 to 2.99ct E SI2 natural marquise diamond cost?

As of October 2026, 2.00 to 2.99ct E SI2 natural marquise diamonds typically cost £6,292 GBP to £44,819 GBP, with a median price of £13,046 GBP. There are currently 83 diamonds matching this specification available across retailers.

Where can I find the best price on a E SI2 marquise diamond?

About 34% of these diamonds are available at multiple retailers, with an average price spread of 37%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct E SI2 Natural Marquise

Quick answer

As of October 2026, there are 83 natural marquise diamonds with E colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £6,292 GBP to £44,819 GBP, with a median of £13,046 GBP. At least 50 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 37%. Half of all listings fall between £5,373 GBP and £7,842 GBP per carat. The same specification in lab grown form lists at a median of about £191 GBP per carat. Over the last 30 days the median price moved -0.7% and the number of listings moved +24.4%.

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. Marquise natural stones in the index: 2,268 USD per carat, +10.8% 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

£4,388 GBP

Highest Price

£56,415 GBP

Average Price

£18,663 GBP