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

As of October 2026, 2.00 to 2.99ct I SI2 natural oval diamonds typically cost £4,527 GBP to £15,150 GBP, with a median price of £8,805 GBP. There are currently 699 diamonds matching this specification available across retailers.

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

About 40% of these diamonds are available at multiple retailers, with an average price spread of 48%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct I SI2 Natural Oval

Quick answer

As of October 2026, there are 699 natural oval diamonds with I colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £4,527 GBP to £15,150 GBP, with a median of £8,805 GBP. At least 55 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 48%. Half of all listings fall between £3,223 GBP and £5,280 GBP per carat. The same specification in lab grown form lists at a median of about £997 GBP per carat. Over the last 30 days the median price moved -1.6% and the number of listings moved +12.3%.

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. Oval natural stones in the index: 2,655 USD per carat, +10.2% 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

699

Lowest Price

£2,131 GBP

Highest Price

£29,102 GBP

Average Price

£9,594 GBP