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

As of October 2026, 5.00ct+ G IF natural cushion diamonds typically cost £47,702 GBP to £105,240 GBP, with a median price of £55,417 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?

About 40% of these diamonds are available at multiple retailers, with an average price spread of 30%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ G IF Natural Cushion

Quick answer

As of October 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 £47,702 GBP to £105,240 GBP, with a median of £55,417 GBP. At least 17 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 30%. Half of all listings fall between £18,829 GBP and £25,845 GBP per carat. The same specification in lab grown form lists at a median of about £1,472 GBP per carat.

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. Cushion natural stones in the index: 2,948 USD per carat, +1.7% 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

Lowest Price

£45,773 GBP

Highest Price

£186,020 GBP

Average Price

£72,962 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

40.0%

Price Spread

29.7%

Price Range

Price per carat distribution across retailers

$31,616/ct

10th Percentile

$14,675

Median

$31,616

90th Percentile

$38,005

Score Distribution

3 diamonds scored across 2 quality tiers

Excellent

2 (66.7%)

Very Good

1 (33.3%)

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Consider Instead

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Lab-Grown G IFSame specifications, lab-grown origin

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1