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

As of October 2026, 1.50 to 1.99ct G SI2 natural oval diamonds typically cost $4,607 NZD to $19,941 NZD, with a median price of $10,596 NZD. There are currently 820 diamonds matching this specification available across retailers.

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

About 36% of these diamonds are available at multiple retailers, with an average price spread of 58%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct G SI2 Natural Oval

Quick answer

As of October 2026, there are 820 natural oval diamonds with G colour and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $4,607 NZD to $19,941 NZD, with a median of $10,596 NZD. At least 57 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 58%. Half of all listings fall between $5,384 NZD and $9,602 NZD per carat. The same specification in lab grown form lists at a median of about $940 NZD per carat. Over the last 30 days the median price moved -2.0% and the number of listings moved -1.2%.

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. 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

820

Lowest Price

$2,447 NZD

Highest Price

$39,109 NZD

Average Price

$11,576 NZD