How much does a 2.00 to 2.99ct E SI2 natural round diamond cost?

As of October 2026, 2.00 to 2.99ct E SI2 natural round diamonds typically cost $12,755 AUD to $46,296 AUD, with a median price of $23,813 AUD. There are currently 598 diamonds matching this specification available across retailers.

Where can I find the best price on a E SI2 round diamond?

About 35% of these diamonds are available at multiple retailers, with an average price spread of 43%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct E SI2 Natural Round

Quick answer

As of October 2026, there are 598 natural round diamonds with E colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $12,755 AUD to $46,296 AUD, with a median of $23,813 AUD. At least 60 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 43%. Half of all listings fall between $8,739 AUD and $13,500 AUD per carat. The same specification in lab grown form lists at a median of about $668 AUD per carat. Over the last 30 days the median price moved -0.4% and the number of listings moved +9.3%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Round natural stones in the index: 2,248 USD per carat, +7.6% month on month. See the full index release

Figures come from current listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: October 2026

Available

598

Lowest Price

$7,327 AUD

Highest Price

$74,374 AUD

Average Price

$26,989 AUD