How much does a 5.00ct+ G IF natural cushion diamond cost?

As of September 2026, 5.00ct+ G IF natural cushion diamonds typically cost £61,587 GBP to £100,594 GBP, with a median price of £81,090 GBP. There are currently 2 diamonds matching this specification available across retailers.

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

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

5.00ct+ G IF Natural Cushion

Quick answer

As of September 2026, there are 2 natural cushion diamonds with G colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £61,587 GBP to £100,594 GBP, with a median of £81,090 GBP. At least 9 retailers stock this exact specification. Half of all listings fall between £22,757 GBP and £25,525 GBP per carat. The same specification in lab grown form lists at a median of about £1,984 GBP per carat.

Three of the best scored stones at this specification right now:

5.06ct Cushion G IF, GIA, score 83 of 100, from £105,470 GBP

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. Cushion natural stones in the index: 2,792 USD per carat, +1.1% 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

£56,711 GBP

Highest Price

£145,683 GBP

Average Price

£81,090 GBP