How much does a 3.00 to 4.99ct G SI2 natural heart diamond cost?

As of September 2026, 3.00 to 4.99ct G SI2 natural heart diamonds typically cost $22,028 NZD to $75,579 NZD, with a median price of $33,873 NZD. There are currently 135 diamonds matching this specification available across retailers.

Where can I find the best price on a G SI2 heart diamond?

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

3.00 to 4.99ct G SI2 Natural Heart

Quick answer

As of September 2026, there are 135 natural heart diamonds with G colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $22,028 NZD to $75,579 NZD, with a median of $33,873 NZD. At least 8 retailers stock this exact specification. Half of all listings fall between $6,931 NZD and $8,347 NZD per carat. The same specification in lab grown form lists at a median of about $440 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. Heart natural stones in the index: 2,261 USD per carat, +1.7% 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

135

Lowest Price

$17,377 NZD

Highest Price

$293,597 NZD

Average Price

$45,488 NZD