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

As of September 2026, 2.00 to 2.99ct I SI2 natural radiant diamonds typically cost €5,846 EUR to €16,912 EUR, with a median price of €9,359 EUR. There are currently 332 diamonds matching this specification available across retailers.

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

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

2.00 to 2.99ct I SI2 Natural Radiant

Quick answer

As of September 2026, there are 332 natural radiant diamonds with I colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run €5,846 EUR to €16,912 EUR, with a median of €9,359 EUR. At least 45 retailers stock this exact specification. Half of all listings fall between €3,865 EUR and €5,710 EUR per carat. The same specification in lab grown form lists at a median of about €5,133 EUR 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. Radiant natural stones in the index: 2,765 USD per carat, +6.0% 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

332

Lowest Price

€3,156 EUR

Highest Price

€30,826 EUR

Average Price

€10,466 EUR