How much does a 1.00 to 1.49ct G SI1 natural princess diamond cost?

As of November 6, 2026, 1.00 to 1.49ct G SI1 natural princess diamonds typically cost €1,471 EUR to €4,502 EUR, with a median price of €2,336 EUR. There are currently 872 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 62%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct G SI1 Natural Princess

Quick answer

As of November 6, 2026, there are 872 natural princess diamonds with G colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €1,471 EUR to €4,502 EUR, with a median of €2,336 EUR. Half of all listings fall between €1,677 EUR and €3,001 EUR per carat. The same specification in lab grown form lists at a median of about €394 EUR per carat. Over the last 30 days the median price moved -1.4% and the number of listings moved +12.2%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Princess natural stones in the index: 1,991 USD per carat, -8.2% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

872

Lowest Price

€1,077 EUR

Highest Price

€8,196 EUR

Average Price

€2,668 EUR