How much does a 5.00ct+ I IF natural oval diamond cost?

As of September 2026, 5.00ct+ I IF natural oval diamonds typically cost £71,041 GBP to £259,088 GBP, with a median price of £108,124 GBP. There are currently 25 diamonds matching this specification available across retailers.

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

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

5.00ct+ I IF Natural Oval

Quick answer

As of September 2026, there are 25 natural oval diamonds with I colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £71,041 GBP to £259,088 GBP, with a median of £108,124 GBP. At least 12 retailers stock this exact specification. Half of all listings fall between £30,467 GBP and £38,468 GBP per carat. The same specification in lab grown form lists at a median of about £1,477 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. Oval natural stones in the index: 2,380 USD per carat, -9.6% 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

Lowest Price

£66,521 GBP

Highest Price

£527,048 GBP

Average Price

£147,618 GBP