How much does a 0.20 to 0.49ct I SI1 natural emerald diamond cost?

As of November 2026, 0.20 to 0.49ct I SI1 natural emerald diamonds typically cost €208 EUR to €441 EUR, with a median price of €285 EUR. There are currently 191 diamonds matching this specification available across retailers.

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

About 45% of these diamonds are available at multiple retailers, with an average price spread of 32%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct I SI1 Natural Emerald

Quick answer

As of November 2026, there are 191 natural emerald diamonds with I color and SI1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run €208 EUR to €441 EUR, with a median of €285 EUR. At least 20 retailers stock this exact specification, and 45% of the stones appear at more than one of them, with an average price spread of 32%. Half of all listings fall between €864 EUR and €1,172 EUR per carat. The same specification in lab grown form lists at a median of about €539 EUR per carat. Over the last 30 days the median price moved -6.5% and the number of listings moved +69.9%.

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. Emerald natural stones in the index: 2,278 USD per carat, +6.2% 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

191

Lowest Price

€141 EUR

Highest Price

€1,029 EUR

Average Price

€316 EUR