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

As of October 2026, 2.00 to 2.99ct I SI1 natural cushion diamonds typically cost $9,447 CAD to $30,173 CAD, with a median price of $17,127 CAD. There are currently 329 diamonds matching this specification available across retailers.

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

About 33% of these diamonds are available at multiple retailers, with an average price spread of 49%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct I SI1 Natural Cushion

Quick answer

As of October 2026, there are 329 natural cushion diamonds with I color and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $9,447 CAD to $30,173 CAD, with a median of $17,127 CAD. At least 56 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 49%. Half of all listings fall between $6,248 CAD and $10,238 CAD per carat. The same specification in lab grown form lists at a median of about $1,559 CAD per carat. Over the last 30 days the median price moved -1.3% and the number of listings moved +4.5%.

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. Cushion natural stones in the index: 2,948 USD per carat, +1.7% 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

329

Lowest Price

$5,112 CAD

Highest Price

$66,632 CAD

Average Price

$19,023 CAD