How much does a 2.00 to 2.99ct I SI1 natural heart diamond cost?

As of September 2026, 2.00 to 2.99ct I SI1 natural heart diamonds typically cost $9,389 AUD to $34,310 AUD, with a median price of $14,708 AUD. There are currently 271 diamonds matching this specification available across retailers.

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

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

2.00 to 2.99ct I SI1 Natural Heart

Quick answer

As of September 2026, there are 271 natural heart diamonds with I colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $9,389 AUD to $34,310 AUD, with a median of $14,708 AUD. At least 51 retailers stock this exact specification. Half of all listings fall between $6,158 AUD and $8,860 AUD per carat. The same specification in lab grown form lists at a median of about $2,036 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

271

Lowest Price

$6,459 AUD

Highest Price

$68,275 AUD

Average Price

$18,036 AUD