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

As of September 2026, 2.00 to 2.99ct E SI2 natural marquise diamonds typically cost £6,925 GBP to £20,069 GBP, with a median price of £12,453 GBP. There are currently 214 diamonds matching this specification available across retailers.

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

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

2.00 to 2.99ct E SI2 Natural Marquise

Quick answer

As of September 2026, there are 214 natural marquise diamonds with E colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £6,925 GBP to £20,069 GBP, with a median of £12,453 GBP. At least 45 retailers stock this exact specification. Half of all listings fall between £5,847 GBP and £7,947 GBP per carat. The same specification in lab grown form lists at a median of about £278 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. Marquise natural stones in the index: 2,114 USD per carat, -8.8% 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

214

Lowest Price

£4,769 GBP

Highest Price

£82,800 GBP

Average Price

£13,552 GBP