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

As of September 2026, 3.00 to 4.99ct J IF natural cushion diamonds typically cost £23,594 GBP to £38,091 GBP, with a median price of £30,322 GBP. There are currently 11 diamonds matching this specification available across retailers.

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3.00 to 4.99ct J IF Natural Cushion

Quick answer

As of September 2026, there are 11 natural cushion diamonds with J colour and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £23,594 GBP to £38,091 GBP, with a median of £30,322 GBP. At least 21 retailers stock this exact specification. Half of all listings fall between £7,448 GBP and £8,917 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

£15,439 GBP

Highest Price

£40,228 GBP

Average Price

£29,736 GBP

Market Intelligence

Retailers Selling

Price Spread

18.5%

Price Range

Price per carat distribution across retailers

$10,057/ct

10th Percentile

$8,489

Median

$10,057

90th Percentile

$12,335

Score Distribution

11 diamonds scored across 4 quality tiers

Excellent

2 (18.2%)

Very Good

2 (18.2%)

Good

6 (54.5%)

Average

1 (9.1%)

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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