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

As of October 2026, 3.00 to 4.99ct J IF natural cushion diamonds typically cost $42,431 AUD to $59,865 AUD, with a median price of $48,744 AUD. There are currently 5 diamonds matching this specification available across retailers.

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

About 18% of these diamonds are available at multiple retailers, with an average price spread of 20%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct J IF Natural Cushion

Quick answer

As of October 2026, there are 5 natural cushion diamonds with J colour and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $42,431 AUD to $59,865 AUD, with a median of $48,744 AUD. At least 22 retailers stock this exact specification, and 18% of the stones appear at more than one of them, with an average price spread of 20%. Half of all listings fall between $13,145 AUD and $15,927 AUD 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

$41,413 AUD

Highest Price

$102,373 AUD

Average Price

$51,015 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

17.6%

Price Spread

20.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$9,636/ct

10th Percentile

$8,632

Median

$9,636

90th Percentile

$12,238

Score Distribution

13 diamonds scored across 3 quality tiers

Excellent

4 (30.8%)

Good

6 (46.2%)

Average

3 (23.1%)

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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