How much does a 3.00 to 4.99ct G SI1 natural princess diamond cost?

As of October 2026, 3.00 to 4.99ct G SI1 natural princess diamonds typically cost $27,450 USD to $57,140 USD, with a median price of $40,780 USD. There are currently 28 diamonds matching this specification available across retailers.

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

About 30% of these diamonds are available at multiple retailers, with an average price spread of 36%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct G SI1 Natural Princess

Quick answer

As of October 2026, there are 28 natural princess diamonds with G color and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $27,450 USD to $57,140 USD, with a median of $40,780 USD. At least 53 retailers stock this exact specification, and 30% of the stones appear at more than one of them, with an average price spread of 36%. Half of all listings fall between $9,457 USD and $13,443 USD per carat. The same specification in lab grown form lists at a median of about $350 USD per carat. Over the last 30 days the median price moved -0.0% and the number of listings moved +7.7%.

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

Lowest Price

$16,268 USD

Highest Price

$83,512 USD

Average Price

$41,616 USD