How much does a 5.00ct+ I IF natural radiant diamond cost?

As of September 2026, 5.00ct+ I IF natural radiant diamonds typically cost $382,846 AUD to $382,846 AUD, with a median price of $382,846 AUD. There are currently 1 diamonds matching this specification available across retailers.

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

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5.00ct+ I IF Natural Radiant

Quick answer

As of September 2026, there are 1 natural radiant diamonds with I colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $382,846 AUD to $382,846 AUD, with a median of $382,846 AUD. At least 7 retailers stock this exact specification. Half of all listings fall between $27,486 AUD and $42,611 AUD per carat. The same specification in lab grown form lists at a median of about $2,188 AUD per carat.

Three of the best scored stones at this specification right now:

8.10ct Radiant I IF, GIA, score 71 of 100, from $382,846 AUD

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. Radiant natural stones in the index: 2,765 USD per carat, +6.0% 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

$382,846 AUD

Highest Price

$382,846 AUD

Average Price

$382,846 AUD

Market Intelligence

Retailers Selling

Price Spread

45.6%

Price Range

Price per carat distribution across retailers

$23,787/ct

10th Percentile

$18,001

Median

$23,787

90th Percentile

$37,205

Score Distribution

1 diamonds scored across 1 quality tiers

Very Good

1 (100.0%)

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Save money without compromising on what matters. These alternatives are visually similar but cost less.

Lab-Grown I 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