How much does a 0.75 to 0.99ct E SI2 natural round diamond cost?

As of October 2026, 0.75 to 0.99ct E SI2 natural round diamonds typically cost $2,001 NZD to $6,084 NZD, with a median price of $3,377 NZD. There are currently 1,667 diamonds matching this specification available across retailers.

Where can I find the best price on a E SI2 round diamond?

About 36% of these diamonds are available at multiple retailers, with an average price spread of 63%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct E SI2 Natural Round

Quick answer

As of October 2026, there are 1,667 natural round diamonds with E colour and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $2,001 NZD to $6,084 NZD, with a median of $3,377 NZD. At least 59 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 63%. Half of all listings fall between $3,174 NZD and $5,702 NZD per carat. The same specification in lab grown form lists at a median of about $865 NZD per carat. Over the last 30 days the median price moved -2.3% and the number of listings moved +8.2%.

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: October 2026

Available

1,667

Lowest Price

$1,111 NZD

Highest Price

$13,376 NZD

Average Price

$3,762 NZD