How much does a 1.50 to 1.99ct E SI2 natural oval diamond cost?

As of October 2026, 1.50 to 1.99ct E SI2 natural oval diamonds typically cost $6,672 NZD to $23,319 NZD, with a median price of $13,100 NZD. There are currently 479 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 48%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct E SI2 Natural Oval

Quick answer

As of October 2026, there are 479 natural oval diamonds with E colour and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $6,672 NZD to $23,319 NZD, with a median of $13,100 NZD. At least 55 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 48%. Half of all listings fall between $6,893 NZD and $11,069 NZD per carat. The same specification in lab grown form lists at a median of about $576 NZD per carat. Over the last 30 days the median price moved -1.5% and the number of listings moved +2.8%.

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. Oval natural stones in the index: 2,655 USD per carat, +10.2% 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

479

Lowest Price

$4,117 NZD

Highest Price

$38,934 NZD

Average Price

$14,204 NZD