How much does a 2.00 to 2.99ct I SI2 natural heart diamond cost?

As of September 2026, 2.00 to 2.99ct I SI2 natural heart diamonds typically cost £3,944 GBP to £12,653 GBP, with a median price of £6,369 GBP. There are currently 394 diamonds matching this specification available across retailers.

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

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

2.00 to 2.99ct I SI2 Natural Heart

Quick answer

As of September 2026, there are 394 natural heart diamonds with I colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £3,944 GBP to £12,653 GBP, with a median of £6,369 GBP. At least 45 retailers stock this exact specification. Half of all listings fall between £2,634 GBP and £4,087 GBP per carat. The same specification in lab grown form lists at a median of about £2,895 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. Heart natural stones in the index: 2,261 USD per carat, +1.7% 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

394

Lowest Price

£2,045 GBP

Highest Price

£37,134 GBP

Average Price

£7,440 GBP