How much does a 2.00 to 2.99ct E SI1 natural round diamond cost?

As of September 2026, 2.00 to 2.99ct E SI1 natural round diamonds typically cost $25,290 NZD to $63,388 NZD, with a median price of $36,058 NZD. There are currently 1,061 diamonds matching this specification available across retailers.

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

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2.00 to 2.99ct E SI1 Natural Round

Quick answer

As of September 2026, there are 1,061 natural round diamonds with E colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $25,290 NZD to $63,388 NZD, with a median of $36,058 NZD. At least 56 retailers stock this exact specification. Half of all listings fall between $15,052 NZD and $20,716 NZD per carat. The same specification in lab grown form lists at a median of about $630 NZD 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. Round natural stones in the index: 2,094 USD per carat, -3.8% 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

1,061

Lowest Price

$16,271 NZD

Highest Price

$129,535 NZD

Average Price

$40,831 NZD