How much does a 3.00 to 4.99ct G SI1 natural heart diamond cost?

As of September 2026, 3.00 to 4.99ct G SI1 natural heart diamonds typically cost $35,242 AUD to $127,969 AUD, with a median price of $54,769 AUD. There are currently 59 diamonds matching this specification available across retailers.

Where can I find the best price on a G SI1 heart diamond?

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

3.00 to 4.99ct G SI1 Natural Heart

Quick answer

As of September 2026, there are 59 natural heart diamonds with G colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $35,242 AUD to $127,969 AUD, with a median of $54,769 AUD. At least 38 retailers stock this exact specification. Half of all listings fall between $13,698 AUD and $19,650 AUD per carat. The same specification in lab grown form lists at a median of about $589 AUD 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

Lowest Price

$27,525 AUD

Highest Price

$285,277 AUD

Average Price

$69,768 AUD