How much does a 3.00 to 4.99ct I IF natural round diamond cost?

As of September 2026, 3.00 to 4.99ct I IF natural round diamonds typically cost $42,580 NZD to $164,292 NZD, with a median price of $78,021 NZD. There are currently 154 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

3.00 to 4.99ct I IF Natural Round

Quick answer

As of September 2026, there are 154 natural round diamonds with I colour and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $42,580 NZD to $164,292 NZD, with a median of $78,021 NZD. At least 44 retailers stock this exact specification. Half of all listings fall between $18,871 NZD and $36,629 NZD per carat. The same specification in lab grown form lists at a median of about $3,077 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

154

Lowest Price

$733 NZD

Highest Price

$348,941 NZD

Average Price

$97,047 NZD

Market Intelligence

Retailers Selling

Price Spread

68.5%

Price Range

Price per carat distribution across retailers

$14,915/ct

10th Percentile

$8,878

Median

$14,915

90th Percentile

$24,691

Score Distribution

154 diamonds scored across 4 quality tiers

Excellent

61 (39.6%)

Very Good

38 (24.7%)

Good

20 (13.0%)

Average

35 (22.7%)

Find Your Diamond

Search 154 I IF round diamonds and compare prices.

Search Diamonds

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

Save 28%

Lab-Grown I IFSame specifications, lab-grown origin

Save 97%

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