How much does a 0.75 to 0.99ct G SI1 natural princess diamond cost?

As of November 2026, 0.75 to 0.99ct G SI1 natural princess diamonds typically cost €784 EUR to €2,741 EUR, with a median price of €1,254 EUR. There are currently 256 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 79%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct G SI1 Natural Princess

Quick answer

As of November 2026, there are 256 natural princess diamonds with G colour and SI1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run €784 EUR to €2,741 EUR, with a median of €1,254 EUR. At least 63 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 79%. Half of all listings fall between €1,122 EUR and €2,302 EUR per carat. The same specification in lab grown form lists at a median of about €376 EUR per carat. Over the last 30 days the median price moved -5.2% and the number of listings moved +12.1%.

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: November 2026

Available

256

Lowest Price

€653 EUR

Highest Price

€5,128 EUR

Average Price

€1,542 EUR