How much does a 0.20 to 0.49ct G SI2 natural round diamond cost?

As of November 2026, 0.20 to 0.49ct G SI2 natural round diamonds typically cost €257 EUR to €767 EUR, with a median price of €462 EUR. There are currently 10,247 diamonds matching this specification available across retailers.

Where can I find the best price on a G SI2 round diamond?

About 22% of these diamonds are available at multiple retailers, with an average price spread of 69%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct G SI2 Natural Round

Quick answer

As of November 2026, there are 10,247 natural round diamonds with G color and SI2 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run €257 EUR to €767 EUR, with a median of €462 EUR. At least 34 retailers stock this exact specification, and 22% of the stones appear at more than one of them, with an average price spread of 69%. Half of all listings fall between €911 EUR and €1,734 EUR per carat. The same specification in lab grown form lists at a median of about €849 EUR per carat. Over the last 30 days the median price moved -5.6% and the number of listings moved +10.7%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

10,247

Lowest Price

€72 EUR

Highest Price

€1,849 EUR

Average Price

€488 EUR