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

As of September 2026, 5.00ct+ I IF natural round diamonds typically cost $132,262 NZD to $604,168 NZD, with a median price of $236,893 NZD. There are currently 78 diamonds matching this specification available across retailers.

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

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5.00ct+ I IF Natural Round

Quick answer

As of September 2026, there are 78 natural round diamonds with I colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $132,262 NZD to $604,168 NZD, with a median of $236,893 NZD. At least 13 retailers stock this exact specification. Half of all listings fall between $35,093 NZD and $69,277 NZD per carat. The same specification in lab grown form lists at a median of about $2,166 NZD 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. Round natural stones in the index: 2,094 USD per carat, -3.8% 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

$78,677 NZD

Highest Price

$1,982,817 NZD

Average Price

$335,800 NZD

Market Intelligence

Retailers Selling

Price Spread

60.8%

Price Range

Price per carat distribution across retailers

$32,755/ct

10th Percentile

$18,838

Median

$32,755

90th Percentile

$46,247

Score Distribution

78 diamonds scored across 4 quality tiers

Excellent

31 (39.7%)

Very Good

23 (29.5%)

Good

8 (10.3%)

Average

16 (20.5%)

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Consider Instead

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

J IFJ colour is visually identical to I to the naked eye

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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