How much does a 5.00ct+ E SI1 natural oval diamond cost?

As of September 2026, 5.00ct+ E SI1 natural oval diamonds typically cost $143,033 SGD to $261,181 SGD, with a median price of $182,043 SGD. There are currently 64 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

5.00ct+ E SI1 Natural Oval

Quick answer

As of September 2026, there are 64 natural oval diamonds with E colour and SI1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $143,033 SGD to $261,181 SGD, with a median of $182,043 SGD. At least 12 retailers stock this exact specification. Half of all listings fall between $51,483 SGD and $58,402 SGD per carat. The same specification in lab grown form lists at a median of about $438 SGD 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

Lowest Price

$110,885 SGD

Highest Price

$512,111 SGD

Average Price

$200,025 SGD