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

As of October 2026, 2.00 to 2.99ct E SI2 natural marquise diamonds typically cost $11,997 AUD to $85,514 AUD, with a median price of $24,877 AUD. There are currently 82 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 37%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct E SI2 Natural Marquise

Quick answer

As of October 2026, there are 82 natural marquise diamonds with E colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $11,997 AUD to $85,514 AUD, with a median of $24,877 AUD. At least 51 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 37%. Half of all listings fall between $10,446 AUD and $15,148 AUD per carat. The same specification in lab grown form lists at a median of about $364 AUD per carat. Over the last 30 days the median price moved -0.8% and the number of listings moved +22.9%.

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. Marquise natural stones in the index: 2,268 USD per carat, +10.8% 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

Lowest Price

$8,370 AUD

Highest Price

$107,610 AUD

Average Price

$35,627 AUD