How much does a 3.00 to 4.99ct G IF natural cushion diamond cost?

As of September 2026, 3.00 to 4.99ct G IF natural cushion diamonds typically cost £27,139 GBP to £48,323 GBP, with a median price of £37,035 GBP. There are currently 14 diamonds matching this specification available across retailers.

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3.00 to 4.99ct G IF Natural Cushion

Quick answer

As of September 2026, there are 14 natural cushion diamonds with G colour and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £27,139 GBP to £48,323 GBP, with a median of £37,035 GBP. At least 27 retailers stock this exact specification. Half of all listings fall between £10,138 GBP and £13,512 GBP per carat. The same specification in lab grown form lists at a median of about £945 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. 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

£23,020 GBP

Highest Price

£62,073 GBP

Average Price

£37,562 GBP

Market Intelligence

Retailers Selling

Price Spread

28.2%

Price Range

Price per carat distribution across retailers

$16,130/ct

10th Percentile

$12,360

Median

$16,130

90th Percentile

$26,726

Score Distribution

14 diamonds scored across 4 quality tiers

Excellent

4 (28.6%)

Very Good

2 (14.3%)

Good

1 (7.1%)

Average

7 (50.0%)

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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