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

As of September 2026, 3.00 to 4.99ct I IF lab grown round diamonds typically cost $1,561 NZD to $102,207 NZD, with a median price of $91,165 NZD. There are currently 8 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 Lab Grown Round

Quick answer

As of September 2026, there are 8 lab grown round diamonds with I colour and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $1,561 NZD to $102,207 NZD, with a median of $91,165 NZD. At least 16 retailers stock this exact specification. Half of all listings fall between $544 NZD and $1,366 NZD per carat. The same specification in natural form lists at a median of about $28,480 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 lab grown stones in the index: 438 USD per carat, -14.1% 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

$1,556 NZD

Highest Price

$201,467 NZD

Average Price

$61,586 NZD

Market Intelligence

Retailers Selling

Price Spread

85.3%

Price Range

Price per carat distribution across retailers

$555/ct

10th Percentile

$264

Median

$555

90th Percentile

$1,877

Score Distribution

8 diamonds scored across 3 quality tiers

Excellent

2 (25.0%)

Very Good

2 (25.0%)

Average

4 (50.0%)

Find Your Diamond

Search 8 I IF round diamonds and compare prices.

Search Diamonds

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