How much does a 1.50 to 1.99ct I VS1 natural round diamond cost?

As of November 2026, 1.50 to 1.99ct I VS1 natural round diamonds typically cost €4,204 EUR to €12,039 EUR, with a median price of €6,964 EUR. There are currently 944 diamonds matching this specification available across retailers.

Where can I find the best price on a I VS1 round diamond?

About 41% of these diamonds are available at multiple retailers, with an average price spread of 49%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct I VS1 Natural Round

Quick answer

As of November 2026, there are 944 natural round diamonds with I color and VS1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run €4,204 EUR to €12,039 EUR, with a median of €6,964 EUR. At least 71 retailers stock this exact specification, and 41% of the stones appear at more than one of them, with an average price spread of 49%. Half of all listings fall between €3,901 EUR and €6,402 EUR per carat. The same specification in lab grown form lists at a median of about €442 EUR per carat. Over the last 30 days the median price moved -1.2% and the number of listings moved +13.4%.

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

944

Lowest Price

€2,666 EUR

Highest Price

€23,927 EUR

Average Price

€7,635 EUR