How much does a 5.00ct+ J IF natural marquise diamond cost?

As of September 2026, 5.00ct+ J IF natural marquise diamonds typically cost $95,480 AUD to $177,597 AUD, with a median price of $155,762 AUD. There are currently 5 diamonds matching this specification available across retailers.

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

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5.00ct+ J IF Natural Marquise

Quick answer

As of September 2026, there are 5 natural marquise diamonds with J colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $95,480 AUD to $177,597 AUD, with a median of $155,762 AUD. At least 14 retailers stock this exact specification. Half of all listings fall between $20,006 AUD and $25,775 AUD 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. Marquise natural stones in the index: 2,114 USD per carat, -8.8% 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

$84,224 AUD

Highest Price

$185,116 AUD

Average Price

$140,757 AUD

Market Intelligence

Retailers Selling

Price Spread

26.3%

Price Range

Price per carat distribution across retailers

$15,604/ct

10th Percentile

$11,562

Median

$15,604

90th Percentile

$20,261

Score Distribution

5 diamonds scored across 2 quality tiers

Good

4 (80.0%)

Average

1 (20.0%)

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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