How much does a 1.00 to 1.49ct E SI1 natural oval diamond cost?

As of September 2026, 1.00 to 1.49ct E SI1 natural oval diamonds typically cost €2,039 EUR to €4,832 EUR, with a median price of €2,928 EUR. There are currently 2,126 diamonds matching this specification available across retailers.

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

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1.00 to 1.49ct E SI1 Natural Oval

Quick answer

As of September 2026, there are 2,126 natural oval diamonds with E colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €2,039 EUR to €4,832 EUR, with a median of €2,928 EUR. At least 61 retailers stock this exact specification. Half of all listings fall between €2,479 EUR and €3,357 EUR per carat. The same specification in lab grown form lists at a median of about €355 EUR per carat.

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

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Oval natural stones in the index: 2,380 USD per carat, -9.6% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

2,126

Lowest Price

€958 EUR

Highest Price

€13,574 EUR

Average Price

€3,245 EUR