How much does a 0.50 to 0.74ct I SI1 natural princess diamond cost?

As of October 2026, 0.50 to 0.74ct I SI1 natural princess diamonds typically cost $645 CAD to $1,227 CAD, with a median price of $882 CAD. There are currently 404 diamonds matching this specification available across retailers.

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

About 41% of these diamonds are available at multiple retailers, with an average price spread of 26%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct I SI1 Natural Princess

Quick answer

As of October 2026, there are 404 natural princess diamonds with I color and SI1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $645 CAD to $1,227 CAD, with a median of $882 CAD. At least 59 retailers stock this exact specification, and 41% of the stones appear at more than one of them, with an average price spread of 26%. Half of all listings fall between $1,347 CAD and $1,737 CAD per carat. The same specification in lab grown form lists at a median of about $1,142 CAD per carat. Over the last 30 days the median price moved -2.0% and the number of listings moved +53.9%.

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. Princess natural stones in the index: 2,158 USD per carat, +5.7% 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

404

Lowest Price

$465 CAD

Highest Price

$2,276 CAD

Average Price

$967 CAD